ASTROSAT CZTI

Data Quality Report

Orbit 20200428_T03_197T01_9000003626_level2

Creation date: 2025-12-10T18:07:37.328474
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/AS1T03_197T01_9000003626cztM0_level2.fits modeM0/AS1T03_197T01_9000003626cztM0_level2_quad_clean.evt
Size (bytes)1,582,352,6401,355,736,960
Size1.5 GB 1.3 GB
Events in quadrant A9,899,0167,902,878
Events in quadrant B9,053,9737,562,953
Events in quadrant C9,506,8147,555,731
Events in quadrant D8,453,4367,031,543

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02450
C02440
D02420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032720
B032730
C032800
D032800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03313650
B04062840
C03420270
D03459930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16064516010.996607%
B160581108396.749865%
C16066330931.925148%
D16052815930.992350%

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 186683 161108 0 0 0.00% 0.00%
B 186684 160059 0 0 0.00% 0.00%
C 186683 161134 0 0 0.00% 0.00%
D 186684 160991 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 9406 11.22 2577 2420 622.6
A 7 110 7804 8.65 2577 2420 622.6
A 0 30 7396 7.99 2577 2420 622.6
B 2 9 7278 10.79 2395 2293 461.9
B 2 8 6134 8.32 2395 2293 461.9
B 5 128 5969 7.96 2395 2293 461.9
C 1 81 7315 7.82 2507 2341 636.2
C 1 80 7282 7.77 2507 2341 636.2
C 12 241 6628 6.74 2507 2341 636.2
D 6 231 5951 5.92 2411 2196 634.5
D 10 189 5816 5.71 2411 2196 634.5
D 6 67 5800 5.68 2411 2196 634.5

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