ASTROSAT CZTI

Data Quality Report

Orbit 20170621_G07_040T01_9000001326_level2

Creation date: 2025-11-14T18:29:08.052146
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_040T01_9000001326cztM0_level2.fits modeM0/AS1G07_040T01_9000001326cztM0_level2_quad_clean.evt
Size (bytes)356,086,080342,648,000
Size339.6 MB 326.8 MB
Events in quadrant A2,148,2322,055,979
Events in quadrant B2,103,6022,059,217
Events in quadrant C2,138,0421,942,684
Events in quadrant D1,753,0481,678,542

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0979820
B0812700
C0789530
D01211340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07840
B07840
C07840
D07840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A384486891.792031%
B384483260.847898%
C384481210.314711%
D3844730627.964210%

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 46404 38446 0 0 0.00% 0.00%
B 46404 38448 0 0 0.00% 0.00%
C 46404 38448 0 0 0.00% 0.00%
D 46404 38433 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 2069 10.71 559 525 144.2
A 7 110 1736 8.4 559 525 144.2
A 9 19 1691 8.09 559 525 144.2
B 2 9 1876 12.16 556 531 110.6
B 12 226 1428 8.11 556 531 110.6
B 14 254 1395 7.81 556 531 110.6
C 1 81 1648 7.58 564 524 148.3
C 1 80 1599 7.25 564 524 148.3
C 12 241 1495 6.55 564 524 148.3
D 3 14 1389 6.94 499 453 134.8
D 4 246 1380 6.88 499 453 134.8
D 6 231 1309 6.35 499 453 134.8

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter