ASTROSAT CZTI

Data Quality Report

Orbit 20210523_A10_094T78_9000004402_level2

Creation date: 2025-12-26T02:02:29.863716
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_094T78_9000004402cztM0_level2.fits modeM0/AS1A10_094T78_9000004402cztM0_level2_quad_clean.evt
Size (bytes)355,720,320427,438,080
Size339.2 MB 407.6 MB
Events in quadrant A2,216,4112,767,548
Events in quadrant B2,060,2922,712,536
Events in quadrant C2,116,0812,584,465
Events in quadrant D1,860,7202,362,603

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0755590
B01112190
C0786470
D01040680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07400
B07420
C07400
D07420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A367153871.054065%
B366528002.182691%
C367228612.344644%
D3665916384.468207%

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 36259 34548 0 0 0.00% 0.00%
B 36259 34547 0 0 0.00% 0.00%
C 36259 34546 0 0 0.00% 0.00%
D 36259 34544 0 0 0.00% 0.00%

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 0 29 2108 10.95 578 544 142.8
A 7 110 1683 7.97 578 544 142.8
A 9 19 1656 7.79 578 544 142.8
B 2 9 1703 10.81 545 520 109.4
B 2 8 1406 8.1 545 520 109.4
B 3 17 1373 7.79 545 520 109.4
C 1 81 1686 8.23 559 524 141.1
C 1 80 1642 7.92 559 524 141.1
C 12 241 1577 7.46 559 524 141.1
D 15 46 1525 7.38 531 484 141.1
D 3 14 1370 6.28 531 484 141.1
D 7 3 1309 5.85 531 484 141.1

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