ASTROSAT CZTI

Data Quality Report

Orbit 20190520_A05_101T05_9000002938_level2

Creation date: 2025-11-30T08:40:51.335063
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/AS1A05_101T05_9000002938cztM0_level2.fits modeM0/AS1A05_101T05_9000002938cztM0_level2_quad_clean.evt
Size (bytes)155,298,240223,361,280
Size148.1 MB 213.0 MB
Events in quadrant A944,9621,474,936
Events in quadrant B904,4801,459,250
Events in quadrant C918,0081,408,970
Events in quadrant D794,0501,280,461

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337620
B0345100
C0354180
D0418040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A165543201.933068%
B165543211.939108%
C165545013.026459%
D165549485.726713%

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 17438 16550 0 0 0.00% 0.00%
B 17438 16550 0 0 0.00% 0.00%
C 17438 16550 0 0 0.00% 0.00%
D 17439 16536 0 0 0.00% 0.00%

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 0 29 904 10.64 246 231 63.3
A 7 110 729 7.87 246 231 63.3
A 15 236 707 7.52 246 231 63.3
B 2 9 757 11.11 238 228 47.6
B 2 8 651 8.88 238 228 47.6
B 5 128 589 7.58 238 228 47.6
C 1 81 710 7.6 242 227 63.6
C 1 80 707 7.55 242 227 63.6
C 12 241 630 6.34 242 227 63.6
D 10 189 592 6.26 226 206 61.7
D 4 160 589 6.21 226 206 61.7
D 3 159 577 6.02 226 206 61.7

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