ASTROSAT CZTI

Data Quality Report

Orbit 38993

Creation date: 2024-06-27T21:59:05.021145
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_9000005420_38993cztM0_level2.fits modeM0/AS1A12_095T02_9000005420_38993cztM0_level2_quad_clean.evt
Size (bytes)2,033,942,400496,019,520
Size1.9 GB 473.0 MB
Events in quadrant A16,761,2393,370,690
Events in quadrant B14,474,4183,483,828
Events in quadrant C14,340,7213,321,875
Events in quadrant D27,382,5002,769,789

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0677389
B0630377
C0609307
D01022677

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06140
B06140
C06140
D06140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0950
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A301515231.734603%
B301512030.673278%
C30151270.089549%
D30151350111.611555%

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 44723 30158 461 461 1.03% 1.53%
B 44723 30158 116 116 0.26% 0.38%
C 44723 30158 1 1 0.00% 0.00%
D 44723 30158 3418 3418 7.64% 11.33%

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 2025889 2964.52 3413 3350 682.2
A 13 248 1360928 1989.86 3413 3350 682.2
A 15 222 85803 120.85 3413 3350 682.2
B 5 172 705770 1074.33 3406 3307 653.9
B 0 230 160094 239.79 3406 3307 653.9
B 15 85 102132 151.14 3406 3307 653.9
C 15 214 1228795 1581.03 3345 3369 775.1
C 13 61 22512 24.7 3345 3369 775.1
C 15 208 22434 24.6 3345 3369 775.1
D 12 235 9125878 11764.56 3177 3082 775.4
D 2 153 3336704 4298.97 3177 3082 775.4
D 12 227 1298193 1670.15 3177 3082 775.4

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