ASTROSAT CZTI

Data Quality Report

Orbit 20210411_A10_053T05_9000004296_level2

Creation date: 2021-04-23T10:06:58.841532
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_053T05_9000004296cztM0_level2_bc.evt modeM0/AS1A10_053T05_9000004296cztM0_level2_quad_clean.evt
Size (bytes)421,859,520103,377,600
Size402.3 MB 98.6 MB
Events in quadrant A2,031,144676,663
Events in quadrant B4,197,219668,684
Events in quadrant C3,291,761610,612
Events in quadrant D2,708,292621,967

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174310
B0241860
C0230630
D0195000

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7947991.245753%
B79481521.912431%
C794889511.260695%
D79481501.887267%

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 9252 7947 0 0 0.00% 0.00%
B 9253 7948 0 0 0.00% 0.00%
C 9253 7948 169 169 1.83% 2.13%
D 9253 7949 19 19 0.21% 0.24%

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 13 254 14836 129.47 521 517 110.6
A 8 192 10678 91.88 521 517 110.6
A 12 96 9452 80.79 521 517 110.6
B 6 159 2199863 22760.85 514 506 96.6
B 0 214 8385 81.54 514 506 96.6
B 4 187 8077 78.35 514 506 96.6
C 15 208 1083368 10024.04 459 461 108.0
C 3 233 379465 3508.29 459 461 108.0
C 14 254 31110 283.71 459 461 108.0
D 8 195 464601 4118.78 500 488 112.7
D 2 250 186898 1654.3 500 488 112.7
D 2 234 34836 304.82 500 488 112.7

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