ASTROSAT CZTI

Data Quality Report

Orbit 20201031_A09_038T27_9000003950_level2

Creation date: 2021-01-07T16:17:30.745359
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A09_038T27_9000003950cztM0_level2_bc.evt modeM0/AS1A09_038T27_9000003950cztM0_level2_quad_clean.evt
Size (bytes)159,364,80073,419,840
Size152.0 MB 70.0 MB
Events in quadrant A966,977483,564
Events in quadrant B1,154,050493,458
Events in quadrant C950,265468,521
Events in quadrant D1,428,405449,287

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095850
B0103720
C096560
D0112170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4675270.577540%
B4675841.796791%
C4675410.877005%
D46751142.438503%

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 5740 4674 0 0 0.00% 0.00%
B 5740 4674 6 6 0.10% 0.13%
C 5740 4674 0 0 0.00% 0.00%
D 5740 4674 34 34 0.59% 0.73%

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 13 254 7508 127.85 249 244 56.8
A 15 174 2559 40.75 249 244 56.8
A 0 226 1567 23.29 249 244 56.8
B 10 245 142368 2846.76 251 245 49.9
B 15 33 13983 275.18 251 245 49.9
B 15 32 11207 219.57 251 245 49.9
C 2 16 12755 212.64 241 240 58.9
C 8 128 4168 66.74 241 240 58.9
C 7 221 3235 50.89 241 240 58.9
D 1 52 431398 7467.17 241 232 57.7
D 2 250 50642 873.03 241 232 57.7
D 2 234 18292 312.77 241 232 57.7

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