ASTROSAT CZTI

Data Quality Report

Orbit 41201

Creation date: 2024-06-27T22:25:45.372821
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_101T02_9000005622_41201cztM0_level2.fits modeM0/AS1A12_101T02_9000005622_41201cztM0_level2_quad_clean.evt
Size (bytes)372,588,48094,752,000
Size355.3 MB 90.4 MB
Events in quadrant A2,995,528659,491
Events in quadrant B3,067,583667,415
Events in quadrant C3,236,604603,831
Events in quadrant D4,060,384550,428

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121293
B0128492
C0129432
D0158932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5545140.252480%
B55451021.839495%
C55452524.544635%
D55454277.700631%

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 9821 5547 2 2 0.02% 0.04%
B 9821 5547 82 82 0.83% 1.48%
C 9821 5547 252 252 2.57% 4.54%
D 9821 5547 379 379 3.86% 6.83%

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 523825 4149.06 623 610 126.1
A 7 3 21761 167.73 623 610 126.1
A 13 248 12027 90.54 623 610 126.1
B 0 229 260914 2214.13 613 598 117.6
B 5 255 242074 2053.89 613 598 117.6
B 0 186 106750 902.88 613 598 117.6
C 0 10 695913 5095.68 588 590 136.5
C 15 214 232828 1701.96 588 590 136.5
C 15 159 13492 94.55 588 590 136.5
D 12 16 893270 6281.73 586 571 142.1
D 13 249 607143 4268.31 586 571 142.1
D 2 249 136246 954.72 586 571 142.1

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