ASTROSAT CZTI

Data Quality Report

Orbit 49669

Creation date: 2024-12-09T16:05:50.222751
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/AS1T05_233T01_9000006438_49669cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49669cztM0_level2_quad_clean.evt
Size (bytes)2,520,604,80070,197,120
Size2.3 GB 66.9 MB
Events in quadrant A32,396,96735,814
Events in quadrant B9,829,3631,193,444
Events in quadrant C17,345,23712,353
Events in quadrant D32,760,6609,992

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010483511
B0379582
C0603562
D01060152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126231237198.003644%
B1262412189.648289%
C126241254799.390051%
D126251254599.366337%

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 13584 12626 11521 11521 84.81% 91.25%
B 13584 12627 767 767 5.65% 6.07%
C 13583 12624 991 991 7.30% 7.85%
D 13584 12627 11132 11132 81.95% 88.16%

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 9514690 49854.26 650 629 190.8
A 3 130 4904918 25698.78 650 629 190.8
A 0 98 4807703 25189.36 650 629 190.8
B 3 232 1488599 5231.32 1341 1298 284.3
B 4 206 792498 2782.91 1341 1298 284.3
B 7 0 715956 2513.69 1341 1298 284.3
C 15 180 7420378 105090.69 123 115 70.6
C 15 181 2021230 28624.37 123 115 70.6
C 15 197 1343390 19024.35 123 115 70.6
D 15 40 9125677 49605.46 422 396 184.0
D 12 191 3868282 21026.01 422 396 184.0
D 15 140 1963619 10672.17 422 396 184.0

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