ASTROSAT CZTI

Data Quality Report

Orbit 20170406_G07_070T01_9000001138_level2

Creation date: 2025-11-10T12:29:15.946710
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/AS1G07_070T01_9000001138cztM0_level2.fits modeM0/AS1G07_070T01_9000001138cztM0_level2_quad_clean.evt
Size (bytes)346,184,640353,280,960
Size330.1 MB 336.9 MB
Events in quadrant A2,125,6622,157,801
Events in quadrant B2,041,4022,147,851
Events in quadrant C2,065,2582,053,757
Events in quadrant D1,790,9941,879,106

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07300
B07300
C07300
D07300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0764800
B0779450
C0752720
D0902890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A358225801.619117%
B358235821.624655%
C358233841.071937%
D3582312853.587081%

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 43358 35818 0 0 0.00% 0.00%
B 43358 35818 0 0 0.00% 0.00%
C 43358 35818 0 0 0.00% 0.00%
D 43358 35815 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 2051 11.06 551 516 138.8
A 7 110 1746 8.86 551 516 138.8
A 12 109 1520 7.23 551 516 138.8
B 2 9 1707 11.12 538 513 107.3
B 14 254 1356 7.85 538 513 107.3
B 12 226 1350 7.8 538 513 107.3
C 1 81 1469 6.68 546 508 143.9
C 1 80 1464 6.64 546 508 143.9
C 12 241 1410 6.27 546 508 143.9
D 3 14 1308 6.23 510 465 135.4
D 10 189 1293 6.12 510 465 135.4
D 6 231 1274 5.97 510 465 135.4

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