ASTROSAT CZTI

Data Quality Report

Orbit 51699

Creation date: 2025-04-22T12:01:14.487832
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/AS1A13_031T01_9000006462_51699cztM0_level2.fits modeM0/AS1A13_031T01_9000006462_51699cztM0_level2_quad_clean.evt
Size (bytes)497,851,20098,867,520
Size474.8 MB 94.3 MB
Events in quadrant A4,642,801646,747
Events in quadrant B3,644,598708,392
Events in quadrant C5,827,413575,739
Events in quadrant D3,792,607594,833

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182692
B0155112
C0219362
D0160832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67161932.873734%
B67161912.843955%
C671677811.584276%
D67161121.667659%

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 7826 6717 53 53 0.68% 0.79%
B 7826 6717 47 47 0.60% 0.70%
C 7826 6717 548 548 7.00% 8.16%
D 7826 6717 81 81 1.04% 1.21%

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 9 191 582204 3254.98 737 718 178.6
A 12 3 472137 2638.86 737 718 178.6
A 3 14 223171 1245.22 737 718 178.6
B 8 128 220920 1408.09 732 707 156.4
B 1 223 109324 694.52 732 707 156.4
B 0 213 102413 650.33 732 707 156.4
C 0 192 1367252 7412.85 677 671 184.4
C 15 189 1114078 6039.54 677 671 184.4
C 9 38 182045 983.84 677 671 184.4
D 15 107 465756 2367.77 711 686 196.4
D 8 176 110427 558.71 711 686 196.4
D 3 12 87150 440.21 711 686 196.4

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