ASTROSAT CZTI

Data Quality Report

Orbit 57588

Creation date: 2026-05-21T00:48:59.122572
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_070T08_9000006576_57588cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57588cztM0_level2_quad_clean.evt
Size (bytes)545,797,440112,651,200
Size520.5 MB 107.4 MB
Events in quadrant A3,899,461747,484
Events in quadrant B5,558,398762,501
Events in quadrant C5,461,545688,781
Events in quadrant D4,675,200666,685

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171350
B0219810
C0217850
D0191700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7846780.994137%
B78475486.983561%
C78474085.199439%
D78471842.344845%

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 7846 7846 55 55 0.70% 0.70%
B 7847 7847 330 330 4.21% 4.21%
C 7847 7847 342 342 4.36% 4.36%
D 7847 7847 157 157 2.00% 2.00%

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 10 248 297155 1403.91 855 833 211.1
A 3 14 121519 571.78 855 833 211.1
A 4 249 55812 260.48 855 833 211.1
B 2 249 1881448 10660.28 824 792 176.4
B 0 245 150182 846.8 824 792 176.4
B 7 252 58060 324.61 824 792 176.4
C 15 224 1993301 9110.27 808 800 218.7
C 14 245 120012 545.07 808 800 218.7
C 14 254 99842 452.85 808 800 218.7
D 2 249 247469 1075.22 820 784 229.4
D 8 240 212338 922.09 820 784 229.4
D 3 224 161887 702.19 820 784 229.4

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