ASTROSAT CZTI

Data Quality Report

Orbit 35954

Creation date: 2022-06-09T05:06:22.839623
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/AS1A11_080T01_9000005146_35954cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35954cztM0_level2_quad_clean.evt
Size (bytes)799,197,12074,687,040
Size762.2 MB 71.2 MB
Events in quadrant A3,642,415514,476
Events in quadrant B13,421,676338,725
Events in quadrant C3,359,729521,375
Events in quadrant D3,403,500496,140

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142483
B0435622
C0133982
D0137542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55573546.370344%
B5557542197.552636%
C55571713.077200%
D55571051.889509%

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 7351 5558 277 277 3.77% 4.98%
B 7351 5558 5159 5159 70.18% 92.82%
C 7351 5558 42 42 0.57% 0.76%
D 7351 5558 96 96 1.31% 1.73%

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 15 169 958221 7294.5 646 636 131.3
A 10 83 162785 1235.19 646 636 131.3
A 13 6 10375 74.19 646 636 131.3
B 5 14 3748272 48990.98 393 385 76.5
B 5 31 3718824 48606.04 393 385 76.5
B 5 15 3711240 48506.91 393 385 76.5
C 9 187 583357 3934.16 634 640 148.1
C 15 214 233238 1570.36 634 640 148.1
C 0 10 52530 350.33 634 640 148.1
D 7 223 416110 2657.43 632 617 156.4
D 13 249 158254 1008.22 632 617 156.4
D 8 195 135660 863.71 632 617 156.4

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