ASTROSAT CZTI

Data Quality Report

Orbit 39595

Creation date: 2024-06-27T22:06:35.606520
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_018T01_9000005488_39595cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39595cztM0_level2_quad_clean.evt
Size (bytes)732,660,480160,194,240
Size698.7 MB 152.8 MB
Events in quadrant A6,190,4271,071,893
Events in quadrant B7,982,7651,051,395
Events in quadrant C7,231,3581,043,026
Events in quadrant D4,948,660997,606

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248554
B0305533
C0281233
D0224813

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99043293.321890%
B99049379.460824%
C99044985.028271%
D99041081.090468%

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 13520 9906 250 250 1.85% 2.52%
B 13520 9906 683 683 5.05% 6.89%
C 13520 9906 434 434 3.21% 4.38%
D 13520 9906 88 88 0.65% 0.89%

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 9 143 939348 4507.56 1034 1013 208.2
A 10 83 740490 3552.29 1034 1013 208.2
A 13 248 402787 1930.04 1034 1013 208.2
B 5 255 3788598 19679.22 1014 986 192.5
B 5 172 182160 941.32 1014 986 192.5
B 12 111 24528 122.32 1014 986 192.5
C 9 187 1587608 6817.69 1008 1015 232.7
C 15 208 1080339 4637.92 1008 1015 232.7
C 15 214 429984 1843.31 1008 1015 232.7
D 13 174 319459 1287.53 1019 992 247.3
D 1 52 218249 878.35 1019 992 247.3
D 13 171 132683 532.41 1019 992 247.3

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