ASTROSAT CZTI

Data Quality Report

Orbit 43515

Creation date: 2024-06-27T22:52:41.280295
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/AS1A12_018T01_9000005874_43515cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43515cztM0_level2_quad_clean.evt
Size (bytes)904,417,92060,465,600
Size862.5 MB 57.7 MB
Events in quadrant A11,742,962583,876
Events in quadrant B6,100,481713,502
Events in quadrant C12,447,09485,917
Events in quadrant D2,700,3344,532

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391770
B0224440
C0412510
D0122450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6235354156.792302%
B623572211.579791%
C6236621799.695318%
D62366236100.000000%

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 7350 6235 2626 2626 35.73% 42.12%
B 7350 6236 511 511 6.95% 8.19%
C 7351 6236 2883 2883 39.22% 46.23%
D 7350 6235 26 26 0.35% 0.42%

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 0 228 3046243 26231.9 565 555 116.1
A 0 229 2680272 23079.86 565 555 116.1
A 14 235 1141959 9830.68 565 555 116.1
B 3 42 2563733 20043.37 678 660 127.9
B 3 25 296518 2313.63 678 660 127.9
B 3 34 111544 867.12 678 660 127.9
C 15 158 10646046 433004.34 98 98 24.6
C 5 80 147343 5988.92 98 98 24.6
C 15 191 140901 5726.9 98 98 24.6
D 4 201 409961 59560.17 5 4 6.9
D 4 124 327349 47557.97 5 4 6.9
D 4 215 318013 46201.6 5 4 6.9

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