ASTROSAT CZTI

Data Quality Report

Orbit 20161002_G06_139T01_9000000700_level2

Creation date: 2025-11-06T19:20:58.727184
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/AS1G06_139T01_9000000700cztM0_level2.fits modeM0/AS1G06_139T01_9000000700cztM0_level2_quad_clean.evt
Size (bytes)314,398,080266,356,800
Size299.8 MB 254.0 MB
Events in quadrant A1,917,5141,510,508
Events in quadrant B1,846,4241,495,453
Events in quadrant C1,859,0401,449,987
Events in quadrant D1,618,7981,330,229

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06780
B06780
C06780
D06780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0692400
B0731700
C0751900
D0853780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A331744641.398686%
B331745371.618738%
C331719212.776522%
D3317311303.406385%

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 41005 33175 0 0 0.00% 0.00%
B 41005 33175 0 0 0.00% 0.00%
C 41005 33173 0 0 0.00% 0.00%
D 41005 33172 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 1817 10.46 499 466 129.2
A 7 110 1635 9.05 499 466 129.2
A 0 30 1446 7.59 499 466 129.2
B 2 9 1611 11.53 487 464 99.5
B 12 226 1401 9.42 487 464 99.5
B 5 128 1383 9.24 487 464 99.5
C 1 80 1333 6.67 490 453 131.9
C 12 241 1303 6.45 490 453 131.9
C 2 191 1303 6.45 490 453 131.9
D 11 82 1311 7.09 461 419 125.8
D 6 231 1215 6.33 461 419 125.8
D 3 14 1212 6.3 461 419 125.8

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