ASTROSAT CZTI

Data Quality Report

Orbit 54357

Creation date: 2025-10-15T15:08:04.360117
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_126T15_9000006516_54357cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54357cztM0_level2_quad_clean.evt
Size (bytes)720,768,96082,304,640
Size687.4 MB 78.5 MB
Events in quadrant A3,398,275648,073
Events in quadrant B3,363,965695,019
Events in quadrant C5,671,755528,833
Events in quadrant D13,736,814163,064

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149202
B0148062
C0217182
D0452792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65511231.877576%
B65511492.274462%
C6551105116.043352%
D6552496275.732601%

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 7651 6552 54 54 0.71% 0.82%
B 7651 6552 55 55 0.72% 0.84%
C 7651 6552 1048 1048 13.70% 16.00%
D 7652 6553 4250 4250 55.54% 64.86%

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 7 206 444664 2561.79 703 686 173.3
A 7 14 72579 414.83 703 686 173.3
A 0 8 42677 242.29 703 686 173.3
B 7 0 209492 1417.33 692 668 147.3
B 10 247 143044 966.34 692 668 147.3
B 0 213 106116 715.7 692 668 147.3
C 1 241 2348670 13689.07 617 610 171.5
C 13 3 217803 1266.22 617 610 171.5
C 13 16 165293 960.09 617 610 171.5
D 8 176 11458869 115896.92 347 330 98.9
D 12 3 217123 2192.74 347 330 98.9
D 15 108 198076 2000.09 347 330 98.9

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