ASTROSAT CZTI

Data Quality Report

Orbit 20170307_A02_132T01_9000001072_level2

Creation date: 2025-11-09T22:42:40.498554
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/AS1A02_132T01_9000001072cztM0_level2.fits modeM0/AS1A02_132T01_9000001072cztM0_level2_quad_clean.evt
Size (bytes)304,652,160300,288,960
Size290.5 MB 286.4 MB
Events in quadrant A1,825,7021,783,725
Events in quadrant B1,770,3601,799,324
Events in quadrant C1,809,5561,717,575
Events in quadrant D1,538,6401,512,316

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06740
B06740
C06740
D06740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0685240
B0700130
C0706410
D0856370

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A331967772.340643%
B331977832.358647%
C331977262.186945%
D3319717555.286622%

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 35304 33193 0 0 0.00% 0.00%
B 35305 33194 0 0 0.00% 0.00%
C 35305 33194 0 0 0.00% 0.00%
D 35305 33192 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 0 29 1805 11.11 473 439 122.9
A 14 188 1774 10.86 473 439 122.9
A 14 204 1577 9.25 473 439 122.9
B 2 9 1587 11.78 466 441 97.3
B 3 17 1217 7.98 466 441 97.3
B 14 254 1212 7.93 466 441 97.3
C 1 80 1383 7.34 478 441 128.4
C 1 81 1379 7.31 478 441 128.4
C 12 241 1228 6.13 478 441 128.4
D 3 31 1105 5.88 439 398 120.2
D 7 3 1078 5.66 439 398 120.2
D 3 14 1076 5.64 439 398 120.2

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