ASTROSAT CZTI

Data Quality Report

Orbit 38688

Creation date: 2024-06-27T21:55:08.019781
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_054T01_9000005392_38688cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38688cztM0_level2_quad_clean.evt
Size (bytes)656,202,240102,839,040
Size625.8 MB 98.1 MB
Events in quadrant A3,621,706737,438
Events in quadrant B6,519,417731,356
Events in quadrant C3,419,689711,172
Events in quadrant D10,227,396481,223

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147973
B0237922
C0141422
D0348282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6492420.646950%
B64923234.975354%
C6492350.539125%
D6492214132.979051%

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 9477 6494 28 28 0.30% 0.43%
B 9477 6493 51 51 0.54% 0.79%
C 9477 6493 25 25 0.26% 0.39%
D 9477 6493 1971 1971 20.80% 30.36%

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 434342 2861.78 743 726 151.5
A 13 248 213986 1407.47 743 726 151.5
A 15 174 59580 388.42 743 726 151.5
B 4 251 3518249 25004.62 726 707 140.7
B 4 171 80202 565.09 726 707 140.7
B 5 184 21956 151.05 726 707 140.7
C 14 254 264827 1553.51 721 724 170.0
C 15 214 263641 1546.53 721 724 170.0
C 15 208 40693 235.11 721 724 170.0
D 2 16 2918696 19207.58 616 597 151.9
D 5 222 2330105 15333.35 616 597 151.9
D 12 227 1894175 12463.96 616 597 151.9

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