ASTROSAT CZTI

Data Quality Report

Orbit 34468

Creation date: 2022-02-12T01:13:39.252672
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_071T13_9000004922_34468cztM0_level2.evt modeM0/AS1A10_071T13_9000004922_34468cztM0_level2_quad_clean.evt
Size (bytes)256,806,72046,180,800
Size244.9 MB 44.0 MB
Events in quadrant A1,334,875314,429
Events in quadrant B1,448,100320,213
Events in quadrant C1,465,164309,883
Events in quadrant D3,350,795266,556

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055452
B059061
C058751
D0118001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A260960.229973%
B2609160.613262%
C2609200.766577%
D260943416.634726%

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 4612 2610 2 2 0.04% 0.08%
B 4612 2610 11 11 0.24% 0.42%
C 4612 2610 16 16 0.35% 0.61%
D 4611 2609 418 418 9.07% 16.02%

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 15 169 52962 800.51 324 318 65.8
A 10 83 18481 276.19 324 318 65.8
A 9 143 7257 105.52 324 318 65.8
B 5 172 156578 2501.34 319 312 62.5
B 4 232 17029 267.59 319 312 62.5
B 12 111 7596 116.59 319 312 62.5
C 15 214 110413 1497.02 311 314 73.5
C 15 208 55396 748.95 311 314 73.5
C 0 10 44285 597.87 311 314 73.5
D 7 223 1370301 16924.16 291 285 81.0
D 8 195 334439 4127.89 291 285 81.0
D 10 203 149770 1846.63 291 285 81.0

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