ASTROSAT CZTI

Data Quality Report

Orbit 34557

Creation date: 2022-02-18T01:47:42.951431
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/AS1A05_103T05_9000004938_34557cztM0_level2.evt modeM0/AS1A05_103T05_9000004938_34557cztM0_level2_quad_clean.evt
Size (bytes)541,149,12083,278,080
Size516.1 MB 79.4 MB
Events in quadrant A2,829,706547,044
Events in quadrant B4,020,994536,330
Events in quadrant C2,936,355539,766
Events in quadrant D6,210,263494,489

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122703
B0157062
C0121102
D0224322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5778520.899965%
B57783786.542056%
C5778250.432676%
D57785118.843891%

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 7150 5779 32 32 0.45% 0.55%
B 7150 5779 266 266 3.72% 4.60%
C 7150 5779 18 18 0.25% 0.31%
D 7150 5779 443 443 6.20% 7.67%

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 9 143 148168 1090.68 668 655 135.2
A 10 83 45889 334.45 668 655 135.2
A 15 174 34556 250.66 668 655 135.2
B 5 172 954998 7718.4 650 635 123.6
B 0 245 148050 1192.22 650 635 123.6
B 0 229 110069 885.05 650 635 123.6
C 15 214 243585 1590.37 653 657 152.7
C 0 10 91877 597.19 653 657 152.7
C 14 67 46505 300.15 653 657 152.7
D 8 195 1717693 10812.7 627 611 158.8
D 7 38 597505 3758.72 627 611 158.8
D 7 80 542253 3410.79 627 611 158.8

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