ASTROSAT CZTI

Data Quality Report

Orbit 52536

Creation date: 2025-06-15T13:07:45.925218
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/AS1C09_011T06_9000006478_52536cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52536cztM0_level2_quad_clean.evt
Size (bytes)708,505,92084,067,200
Size675.7 MB 80.2 MB
Events in quadrant A3,233,574639,151
Events in quadrant B4,337,242628,492
Events in quadrant C6,445,006508,684
Events in quadrant D11,714,059321,644

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143711
B0171661
C0236371
D0392621

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6408671.045568%
B64094076.350445%
C6409103916.211577%
D6409319649.867374%

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 7288 6409 30 30 0.41% 0.47%
B 7289 6410 264 264 3.62% 4.12%
C 7289 6410 765 765 10.50% 11.93%
D 7289 6410 2838 2838 38.94% 44.27%

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 3 46 90250 517.73 683 667 173.0
A 15 174 88549 507.9 683 667 173.0
A 5 243 66249 379.02 683 667 173.0
B 10 44 726392 5183.26 653 630 140.0
B 4 216 233030 1659.76 653 630 140.0
B 4 21 145530 1034.85 653 630 140.0
C 12 254 1711222 9902.83 615 607 172.7
C 15 224 705260 4079.27 615 607 172.7
C 15 248 574038 3319.62 615 607 172.7
D 6 42 3409172 22868.96 515 492 149.1
D 8 176 2011359 13490.98 515 492 149.1
D 11 176 1435341 9626.45 515 492 149.1

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