ASTROSAT CZTI

Data Quality Report

Orbit 20211029_C07_005T01_9000004748_level2

Creation date: 2021-11-02T19:12:29.560709
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C07_005T01_9000004748cztM0_level2_bc.evt modeM0/AS1C07_005T01_9000004748cztM0_level2_quad_clean.evt
Size (bytes)11,883,225,6003,639,876,480
Size11.1 GB 3.4 GB
Events in quadrant A42,785,36925,057,005
Events in quadrant B69,480,79624,804,436
Events in quadrant C50,233,22825,176,399
Events in quadrant D184,122,40421,805,744

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040000
B040000
C040000
D040000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07470
B07470
C07470
D07470

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04001260
B05178950
C04223320
D08771110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1956944300.219731%
B195694117506.004272%
C19569420141.029158%
D1956943044815.558985%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 270383 195700 61 61 0.02% 0.03%
B 270383 195683 559 559 0.21% 0.29%
C 270383 195695 397 397 0.15% 0.20%
D 270383 195685 10167 10167 3.76% 5.20%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 14 63 564352 244.93 10242 10107 2262.8
A 0 143 459590 198.64 10242 10107 2262.8
A 13 254 356753 153.19 10242 10107 2262.8
B 5 172 16224691 8098.35 10149 9950 2002.2
B 5 200 2993424 1490.08 10149 9950 2002.2
B 0 219 2442425 1214.88 10149 9950 2002.2
C 0 10 4466175 1915.76 10104 10055 2326.0
C 14 67 2245212 960.93 10104 10055 2326.0
C 1 241 1199158 511.22 10104 10055 2326.0
D 8 195 77201877 31083.69 9390 9178 2483.4
D 12 227 22405504 9018.47 9390 9178 2483.4
D 7 80 10689809 4300.84 9390 9178 2483.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter