ASTROSAT CZTI

Data Quality Report

Orbit 36426

Creation date: 2022-07-19T03:00:08.642637
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/AS1C07_009T01_9000005200_36426cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36426cztM0_level2_quad_clean.evt
Size (bytes)454,288,32090,630,720
Size433.2 MB 86.4 MB
Events in quadrant A2,825,056595,391
Events in quadrant B3,993,785581,453
Events in quadrant C3,104,720590,323
Events in quadrant D3,429,882561,053

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122843
B0158442
C0128272
D0143492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A595770.117509%
B59572734.582844%
C5957500.839349%
D5957941.577975%

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 7269 5958 3 3 0.04% 0.05%
B 7269 5958 175 175 2.41% 2.94%
C 7269 5958 35 35 0.48% 0.59%
D 7269 5958 84 84 1.16% 1.41%

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 10 83 195864 1444.26 670 656 135.2
A 9 143 23027 165.51 670 656 135.2
A 13 6 12343 86.47 670 656 135.2
B 5 172 575966 4599.15 652 634 125.1
B 5 255 520041 4152.09 652 634 125.1
B 0 189 133036 1058.41 652 634 125.1
C 15 214 256272 1686.66 653 657 151.6
C 0 10 199354 1311.09 653 657 151.6
C 12 249 88496 579.6 653 657 151.6
D 2 249 339996 2153.83 653 636 157.6
D 2 250 131475 830.4 653 636 157.6
D 12 6 110203 695.39 653 636 157.6

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