ASTROSAT CZTI

Data Quality Report

Orbit 34623

Creation date: 2022-02-23T11:03:34.969485
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/AS1A11_058T02_9000004954_34623cztM0_level2.evt modeM0/AS1A11_058T02_9000004954_34623cztM0_level2_quad_clean.evt
Size (bytes)25,600,3207,197,120
Size24.4 MB 6.9 MB
Events in quadrant A193,01057,152
Events in quadrant B183,50437,747
Events in quadrant C181,60247,547
Events in quadrant D190,73443,337

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031
B031
C041
D066

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027641958
B043663662
C030582335
D037713000

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03016
B02614
C02318
D02818

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39210.255102%
B26072.692308%
C33630.892857%
D31200.000000%

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 1186 597 0 0 0.00% 0.00%
B 1181 410 4 4 0.34% 0.98%
C 1469 530 1 1 0.07% 0.19%
D 1136 485 0 0 0.00% 0.00%

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 10 83 6137 522.21 47 46 11.7
A 9 143 1222 100.82 47 46 11.7
A 7 16 687 54.96 47 46 11.7
B 5 172 58818 7263.67 31 30 8.1
B 4 232 858 102.31 31 30 8.1
B 0 189 832 99.09 31 30 8.1
C 15 214 14351 1347.24 38 38 10.6
C 0 10 14133 1326.72 38 38 10.6
C 10 49 1726 158.89 38 38 10.6
D 8 195 48537 4537.49 36 35 10.7
D 3 238 1289 117.31 36 35 10.7
D 1 47 1267 115.26 36 35 10.7

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