ASTROSAT CZTI

Data Quality Report

Orbit 20210703_A10_058T02_9000004510_level2

Creation date: 2025-12-27T09:45:33.072946
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/AS1A10_058T02_9000004510cztM0_level2.fits modeM0/AS1A10_058T02_9000004510cztM0_level2_quad_clean.evt
Size (bytes)1,124,343,360926,228,160
Size1.0 GB 883.3 MB
Events in quadrant A7,091,7185,405,188
Events in quadrant B6,521,3225,227,271
Events in quadrant C6,775,1845,054,626
Events in quadrant D5,955,8064,656,841

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02359980
B03560830
C02438910
D03636110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022920
B022920
C022920
D022920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11243310580.941005%
B11243344753.980148%
C11243330112.678039%
D11243330722.732294%

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 128233 112433 0 0 0.00% 0.00%
B 128233 112404 0 0 0.00% 0.00%
C 128233 112426 0 0 0.00% 0.00%
D 128233 112430 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 6818 11.44 1845 1733 444.5
A 7 110 5407 8.26 1845 1733 444.5
A 9 19 5394 8.24 1845 1733 444.5
B 2 9 5243 10.56 1725 1647 340.6
B 5 128 4382 8.03 1725 1647 340.6
B 3 80 4353 7.95 1725 1647 340.6
C 12 241 4717 6.73 1792 1677 451.4
C 3 126 4553 6.37 1792 1677 451.4
C 9 209 4548 6.36 1792 1677 451.4
D 15 46 4453 6.45 1702 1552 449.4
D 7 3 4196 5.88 1702 1552 449.4
D 10 189 4192 5.87 1702 1552 449.4

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