ASTROSAT CZTI

Data Quality Report

Orbit 41079

Creation date: 2024-06-27T22:24:11.336292
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_095T02_9000005596_41079cztM0_level2.fits modeM0/AS1A12_095T02_9000005596_41079cztM0_level2_quad_clean.evt
Size (bytes)323,766,72092,142,720
Size308.8 MB 87.9 MB
Events in quadrant A2,970,335618,745
Events in quadrant B2,997,755633,021
Events in quadrant C2,748,325602,922
Events in quadrant D2,841,891552,126

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120413
B0124602
C0114942
D0121942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5475220.401826%
B5475811.479452%
C5475190.347032%
D5475601.095890%

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 7178 5476 2 2 0.03% 0.04%
B 7178 5476 64 64 0.89% 1.17%
C 7178 5476 13 13 0.18% 0.24%
D 7178 5476 38 38 0.53% 0.69%

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 531446 4104.08 627 613 129.3
A 13 254 10385 75.55 627 613 129.3
A 12 189 9292 67.1 627 613 129.3
B 0 186 311726 2574.0 618 602 120.9
B 0 190 100126 823.38 618 602 120.9
B 5 255 80809 663.57 618 602 120.9
C 15 214 236777 1663.35 604 608 142.0
C 14 254 77937 544.63 604 608 142.0
C 12 249 34420 238.14 604 608 142.0
D 13 171 112081 751.38 604 588 148.4
D 13 249 103927 696.43 604 588 148.4
D 2 249 88576 592.97 604 588 148.4

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