ASTROSAT CZTI

Data Quality Report

Orbit 02842

Creation date: 2024-06-27T14:22:20.710315
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/AS1P01_999T99_9000000410_02842cztM0_level2.evt modeM0/AS1P01_999T99_9000000410_02842cztM0_level2_quad_clean.evt
Size (bytes)585,480,96033,580,800
Size558.4 MB 32.0 MB
Events in quadrant A2,041,945190,322
Events in quadrant B2,592,282196,415
Events in quadrant C4,751,428184,348
Events in quadrant D8,038,361125,691

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096331
B0109671
C0173281
D0269931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4528340.750883%
B4528180.397527%
C452882418.197880%
D4528267459.054770%

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 6685 4528 30 30 0.45% 0.66%
B 6685 4528 9 9 0.13% 0.20%
C 6685 4528 688 688 10.29% 15.19%
D 6685 4528 2006 2006 30.01% 44.30%

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 48 127711 1359.62 455 446 93.6
A 14 249 116258 1237.26 455 446 93.6
A 13 34 15309 158.79 455 446 93.6
B 3 28 527636 5690.41 466 454 92.6
B 6 36 72560 778.31 466 454 92.6
B 3 29 58506 626.61 466 454 92.6
C 8 81 2820436 28547.6 420 422 98.8
C 1 192 67902 683.11 420 422 98.8
C 8 82 59498 598.04 420 422 98.8
D 15 50 4137282 56053.07 290 284 73.8
D 15 194 2594492 35149.48 290 284 73.8
D 1 83 96638 1305.52 290 284 73.8

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
Veto Counter