ASTROSAT CZTI

Data Quality Report

Orbit 57510

Creation date: 2026-05-15T18:11:57.774025
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_113T09_9000006574_57510cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57510cztM0_level2_quad_clean.evt
Size (bytes)446,889,60099,570,240
Size426.2 MB 95.0 MB
Events in quadrant A3,721,268659,243
Events in quadrant B3,796,296702,496
Events in quadrant C4,187,163615,906
Events in quadrant D4,329,247581,236

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156441
B0153891
C0170931
D0171451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6545991.512605%
B65451031.573720%
C65462724.155209%
D65462944.491292%

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 7679 6545 45 45 0.59% 0.69%
B 7679 6545 25 25 0.33% 0.38%
C 7681 6547 183 183 2.38% 2.80%
D 7681 6547 219 219 2.85% 3.35%

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 12 814292 4551.67 733 716 178.7
A 7 64 34941 191.48 733 716 178.7
A 3 128 20237 109.21 733 716 178.7
B 4 206 593725 3905.36 713 686 151.9
B 5 185 86178 562.99 713 686 151.9
B 10 247 70858 462.1 713 686 151.9
C 15 224 1187068 6223.44 694 688 190.6
C 14 254 144382 753.78 694 688 190.6
C 12 249 78059 405.87 694 688 190.6
D 2 31 634284 3162.9 705 672 200.3
D 15 142 461460 2300.19 705 672 200.3
D 8 240 196330 976.7 705 672 200.3

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