ASTROSAT CZTI

Data Quality Report

Orbit 58602

Creation date: 2026-07-28T16:57:54.811258
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_044T04_9000006592_58602cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58602cztM0_level2_quad_clean.evt
Size (bytes)851,569,92075,795,840
Size812.1 MB 72.3 MB
Events in quadrant A4,370,404643,637
Events in quadrant B6,609,877509,138
Events in quadrant C16,106,685111,424
Events in quadrant D3,918,424566,304

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174862
B0243362
C0523875
D0164382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6665681.020255%
B6665181027.156789%
C6664565784.888956%
D66641932.896158%

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 7575 6666 35 35 0.46% 0.53%
B 7575 6665 1099 1099 14.51% 16.49%
C 7573 6664 5630 5630 74.34% 84.48%
D 7574 6665 192 192 2.53% 2.88%

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 3 14 952470 5264.02 728 707 180.8
A 12 114 214512 1182.51 728 707 180.8
A 10 17 186996 1030.33 728 707 180.8
B 6 255 3492818 26921.34 607 585 129.7
B 8 234 164132 1260.77 607 585 129.7
B 2 249 143536 1102.0 607 585 129.7
C 15 217 13126553 134237.07 353 350 97.8
C 15 164 995375 10175.77 353 350 97.8
C 9 38 366058 3739.97 353 350 97.8
D 2 249 441926 2202.26 696 663 200.4
D 3 12 340491 1696.02 696 663 200.4
D 2 120 160026 795.35 696 663 200.4

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