ASTROSAT CZTI

Data Quality Report

Orbit 20200603_A09_059T01_9000003706_level2

Creation date: 2025-12-11T08:50:26.462680
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/AS1A09_059T01_9000003706cztM0_level2.fits modeM0/AS1A09_059T01_9000003706cztM0_level2_quad_clean.evt
Size (bytes)2,039,644,8001,761,137,280
Size1.9 GB 1.6 GB
Events in quadrant A12,853,35210,508,372
Events in quadrant B12,174,01010,424,353
Events in quadrant C12,217,7009,748,785
Events in quadrant D10,641,1128,770,185

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041320
B041320
C041320
D041320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04453410
B04304870
C04650470
D06058980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20263521091.040788%
B20263425921.279154%
C20263366083.261068%
D202632108495.354041%

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 233455 202621 0 0 0.00% 0.00%
B 233455 202624 0 0 0.00% 0.00%
C 233455 202613 0 0 0.00% 0.00%
D 233455 202549 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 12314 11.28 3349 3153 811.8
A 7 110 10226 8.71 3349 3153 811.8
A 0 30 9711 8.08 3349 3153 811.8
B 2 9 9559 10.47 3223 3087 618.1
B 2 8 8109 8.12 3223 3087 618.1
B 3 17 7950 7.87 3223 3087 618.1
C 1 80 9369 7.83 3228 3034 809.5
C 1 81 9282 7.72 3228 3034 809.5
C 12 241 8482 6.73 3228 3034 809.5
D 6 231 7505 5.93 3041 2781 797.1
D 7 3 7457 5.87 3041 2781 797.1
D 3 14 7388 5.78 3041 2781 797.1

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