ASTROSAT CZTI

Data Quality Report

Orbit 20161217_G06_134T03_9000000894_level2

Creation date: 2025-11-08T16:01:48.981049
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_134T03_9000000894cztM0_level2.fits modeM0/AS1G06_134T03_9000000894cztM0_level2_quad_clean.evt
Size (bytes)301,147,200270,077,760
Size287.2 MB 257.6 MB
Events in quadrant A1,796,5881,552,111
Events in quadrant B1,755,1821,560,600
Events in quadrant C1,797,7601,498,618
Events in quadrant D1,494,9721,291,500

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06740
B06740
C06740
D06740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0728270
B0735000
C0673300
D01060760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A331242810.848327%
B331255301.600000%
C33125800.241509%
D3312414334.326168%

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 40205 33125 0 0 0.00% 0.00%
B 40206 33106 0 0 0.00% 0.00%
C 40206 33126 0 0 0.00% 0.00%
D 40206 33123 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 1778 11.28 467 436 119.0
A 7 110 1570 9.53 467 436 119.0
A 0 30 1373 7.88 467 436 119.0
B 2 9 1524 11.39 463 440 95.1
B 14 254 1188 7.86 463 440 95.1
B 12 226 1174 7.72 463 440 95.1
C 1 80 1360 7.28 474 440 126.4
C 12 241 1279 6.64 474 440 126.4
C 1 81 1273 6.59 474 440 126.4
D 3 14 1140 6.42 426 385 117.7
D 6 231 1109 6.15 426 385 117.7
D 11 82 1100 6.08 426 385 117.7

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