ASTROSAT CZTI

Data Quality Report

Orbit 57980

Creation date: 2026-06-16T09:33:01.162204
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_031T01_9000006584_57980cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57980cztM0_level2_quad_clean.evt
Size (bytes)567,622,080118,589,760
Size541.3 MB 113.1 MB
Events in quadrant A4,827,403766,206
Events in quadrant B6,074,917808,182
Events in quadrant C5,101,511730,583
Events in quadrant D4,343,845691,453

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206860
B0239870
C0211770
D0191510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85542242.618658%
B85544024.699556%
C85542002.338087%
D85541301.519757%

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 8736 8736 185 185 2.12% 2.12%
B 8736 8736 238 238 2.72% 2.72%
C 8736 8736 187 187 2.14% 2.14%
D 8736 8736 104 104 1.19% 1.19%

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 1103336 4713.09 945 920 233.9
A 3 14 22864 93.81 945 920 233.9
A 8 6 21314 87.19 945 920 233.9
B 10 128 1647633 8077.38 934 898 203.9
B 5 185 162429 792.32 934 898 203.9
B 6 51 160186 781.32 934 898 203.9
C 15 224 1256864 4994.54 918 911 251.5
C 12 252 203486 805.58 918 911 251.5
C 14 254 28983 111.63 918 911 251.5
D 12 110 275056 1072.88 911 871 255.6
D 13 138 120478 468.02 911 871 255.6
D 8 240 104724 406.37 911 871 255.6

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