ASTROSAT CZTI

Data Quality Report

Orbit 20190605_A05_227T01_9000002966_level2

Creation date: 2025-12-01T06:01:41.153527
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_227T01_9000002966cztM0_level2.fits modeM0/AS1A05_227T01_9000002966cztM0_level2_quad_clean.evt
Size (bytes)93,519,36062,928,000
Size89.2 MB 60.0 MB
Events in quadrant A591,380336,654
Events in quadrant B551,356325,161
Events in quadrant C539,172292,572
Events in quadrant D484,108284,596

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196760
B0212000
C0330340
D0304570

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A96011081.124883%
B96011281.333194%
C96018749.103218%
D96017798.113738%

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 11601 9599 0 0 0.00% 0.00%
B 11601 9599 0 0 0.00% 0.00%
C 11601 9596 0 0 0.00% 0.00%
D 11601 9597 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 29 550 10.05 154 145 40.3
A 7 110 461 7.84 154 145 40.3
A 14 79 451 7.59 154 145 40.3
B 5 255 372 7.6 146 140 30.5
B 5 128 350 6.88 146 140 30.5
B 14 254 346 6.75 146 140 30.5
C 7 111 381 6.43 142 134 38.4
C 9 209 374 6.24 142 134 38.4
C 12 241 371 6.17 142 134 38.4
D 3 14 372 6.5 138 126 37.8
D 15 142 363 6.26 138 126 37.8
D 6 67 354 6.03 138 126 37.8

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