ASTROSAT CZTI

Data Quality Report

Orbit 22921

Creation date: 2024-06-27T18:47:32.722576
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/AS1A07_047T09_9000003386_22921cztM0_level2.evt modeM0/AS1A07_047T09_9000003386_22921cztM0_level2_quad_clean.evt
Size (bytes)405,820,80080,424,000
Size387.0 MB 76.7 MB
Events in quadrant A2,397,652534,958
Events in quadrant B2,508,705538,038
Events in quadrant C2,486,961508,987
Events in quadrant D4,532,375477,953

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107940
B0109800
C0108930
D0171440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5357120.224006%
B5357130.242673%
C5357300.560015%
D53574057.560202%

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 5357 5357 0 0 0.00% 0.00%
B 5357 5357 0 0 0.00% 0.00%
C 5357 5357 1 1 0.02% 0.02%
D 5357 5357 331 331 6.18% 6.18%

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 13 254 9624 71.96 616 603 125.4
A 0 23 9092 67.71 616 603 125.4
A 0 226 5821 41.62 616 603 125.4
B 0 190 32656 272.86 616 601 117.5
B 0 228 18437 151.83 616 601 117.5
B 0 230 17275 141.94 616 601 117.5
C 14 238 93466 670.37 588 590 138.5
C 6 80 86207 617.97 588 590 138.5
C 7 247 8644 58.13 588 590 138.5
D 1 52 1095325 7683.61 580 562 142.5
D 13 172 942774 6612.93 580 562 142.5
D 12 233 120123 839.14 580 562 142.5

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