ASTROSAT CZTI

Data Quality Report

Orbit 40675

Creation date: 2024-06-27T22:19:00.390448
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_029T02_9000005558_40675cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40675cztM0_level2_quad_clean.evt
Size (bytes)336,240,00085,631,040
Size320.7 MB 81.7 MB
Events in quadrant A2,741,327586,619
Events in quadrant B2,816,055602,078
Events in quadrant C3,930,490550,452
Events in quadrant D2,554,785491,177

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114343
B0117932
C0150382
D0112902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5178170.328312%
B5178941.815373%
C51783556.855929%
D51784558.787177%

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 7000 5179 10 10 0.14% 0.19%
B 7000 5179 59 59 0.84% 1.14%
C 7000 5179 346 346 4.94% 6.68%
D 7000 5179 20 20 0.29% 0.39%

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 469555 4011.5 569 558 116.9
A 13 248 45560 384.92 569 558 116.9
A 13 252 9601 77.35 569 558 116.9
B 0 229 357093 3256.85 567 550 109.5
B 0 190 65485 593.15 567 550 109.5
B 5 255 62533 566.19 567 550 109.5
C 14 254 954526 7562.6 535 537 126.1
C 9 187 579036 4585.96 535 537 126.1
C 15 214 217036 1716.26 535 537 126.1
D 2 250 181145 1388.02 525 511 130.1
D 12 191 152687 1169.35 525 511 130.1
D 9 19 60769 463.03 525 511 130.1

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