ASTROSAT CZTI

Data Quality Report

Orbit 36176

Creation date: 2022-06-07T14:26:22.667303
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/AS1A10_071T50_9000005166_36176cztM0_level2.evt modeM0/AS1A10_071T50_9000005166_36176cztM0_level2_quad_clean.evt
Size (bytes)457,243,20048,862,080
Size436.1 MB 46.6 MB
Events in quadrant A2,670,381290,798
Events in quadrant B3,397,238292,776
Events in quadrant C4,010,307270,726
Events in quadrant D3,423,082266,513

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109223
B0133742
C0150322
D0135542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5109100.195733%
B51091202.348796%
C51093617.065962%
D51092885.637111%

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 9295 5111 6 6 0.06% 0.12%
B 9295 5111 65 65 0.70% 1.27%
C 9295 5111 303 303 3.26% 5.93%
D 9295 5111 239 239 2.57% 4.68%

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 172753 1390.47 615 604 123.8
A 10 255 87237 699.75 615 604 123.8
A 8 144 21274 166.95 615 604 123.8
B 5 236 383666 3265.37 609 594 117.3
B 4 171 288334 2452.74 609 594 117.3
B 5 172 158474 1345.8 609 594 117.3
C 1 23 951742 7012.78 579 585 135.6
C 0 10 323007 2377.18 579 585 135.6
C 15 208 232288 1708.32 579 585 135.6
D 1 52 527754 3654.92 584 569 144.2
D 12 233 229566 1587.61 584 569 144.2
D 13 249 166594 1151.03 584 569 144.2

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