ASTROSAT CZTI

Data Quality Report

Orbit 59063

Creation date: 2026-08-28T05:54:27.452087
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/AS1A14_004T02_9000006600_59063cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59063cztM0_level2_quad_clean.evt
Size (bytes)967,901,76071,320,320
Size923.1 MB 68.0 MB
Events in quadrant A3,005,640649,314
Events in quadrant B3,440,674684,154
Events in quadrant C12,934,049330,148
Events in quadrant D15,952,29148,232

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134962
B0147612
C0428262
D0517092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6411490.764311%
B64111472.292934%
C6411340053.033848%
D6411590492.091717%

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 7571 6411 30 30 0.40% 0.47%
B 7571 6412 83 83 1.10% 1.29%
C 7571 6412 3410 3410 45.04% 53.18%
D 7570 6410 5834 5834 77.07% 91.01%

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 10 251 67806 379.13 712 693 177.0
A 15 233 44932 249.91 712 693 177.0
A 3 245 40336 223.95 712 693 177.0
B 0 213 201924 1340.4 704 677 150.1
B 5 185 126782 839.92 704 677 150.1
B 4 171 126405 837.41 704 677 150.1
C 15 219 10411881 64524.21 582 576 161.4
C 6 223 79424 488.66 582 576 161.4
C 14 254 54857 336.41 582 576 161.4
D 12 1 14793158 300651.4 161 152 49.2
D 2 62 343044 6968.9 161 152 49.2
D 6 239 86829 1761.61 161 152 49.2

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

TCT plots

Parameter TCT0 TCT_healed
Tct