ASTROSAT CZTI

Data Quality Report

Orbit 38631

Creation date: 2024-06-27T21:54:22.811808
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/AS1A12_061T03_9000005390_38631cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38631cztM0_level2_quad_clean.evt
Size (bytes)410,757,12093,415,680
Size391.7 MB 89.1 MB
Events in quadrant A3,050,875641,550
Events in quadrant B2,976,187656,341
Events in quadrant C2,822,769630,877
Events in quadrant D5,920,259508,557

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126093
B0125392
C0117672
D0215252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5591460.822751%
B5591661.180469%
C5591230.411375%
D559189115.936326%

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 8818 5593 24 24 0.27% 0.43%
B 8818 5593 23 23 0.26% 0.41%
C 8818 5593 15 15 0.17% 0.27%
D 8818 5593 808 808 9.16% 14.45%

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 10 83 420156 3242.97 635 623 129.4
A 9 143 92096 707.08 635 623 129.4
A 13 248 40846 310.92 635 623 129.4
B 0 183 234512 1883.2 638 621 124.2
B 0 155 79992 639.07 638 621 124.2
B 5 184 46457 369.05 638 621 124.2
C 15 214 226166 1522.67 629 636 148.1
C 14 254 100976 677.45 629 636 148.1
C 0 10 19356 126.39 629 636 148.1
D 2 249 1911386 13262.05 585 569 144.1
D 15 0 642453 4455.01 585 569 144.1
D 13 249 336568 2332.01 585 569 144.1

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