ASTROSAT CZTI

Data Quality Report

Orbit 54738

Creation date: 2025-11-10T19:32:02.280281
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_103T01_9000006524_54738cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54738cztM0_level2_quad_clean.evt
Size (bytes)747,354,240112,970,880
Size712.7 MB 107.7 MB
Events in quadrant A4,071,497800,707
Events in quadrant B6,627,424805,395
Events in quadrant C4,502,211742,092
Events in quadrant D11,803,434481,298

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184462
B0256232
C0199192
D0410502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8503730.858521%
B85037328.608726%
C85033343.928025%
D8504303335.665569%

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 9123 8505 22 22 0.24% 0.26%
B 9123 8505 570 570 6.25% 6.70%
C 9123 8505 119 119 1.30% 1.40%
D 9124 8505 2715 2715 29.76% 31.92%

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 8 168463 741.35 916 894 226.0
A 4 206 98287 430.88 916 894 226.0
A 3 14 86291 377.81 916 894 226.0
B 2 249 2106310 10978.21 884 851 191.8
B 0 173 364836 1897.88 884 851 191.8
B 5 185 252683 1313.09 884 851 191.8
C 4 5 491480 2045.41 876 868 239.9
C 13 3 194861 808.78 876 868 239.9
C 15 219 84762 349.76 876 868 239.9
D 2 62 5453796 25159.54 763 728 216.7
D 11 129 1511239 6969.24 763 728 216.7
D 15 94 1477485 6813.51 763 728 216.7

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