ASTROSAT CZTI

Data Quality Report

Orbit 38081

Creation date: 2024-06-27T21:48:10.898254
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/AS1A11_047T09_9000005362_38081cztM0_level2.fits modeM0/AS1A11_047T09_9000005362_38081cztM0_level2_quad_clean.evt
Size (bytes)880,001,280160,868,160
Size839.2 MB 153.4 MB
Events in quadrant A5,733,9801,177,846
Events in quadrant B5,064,3491,188,477
Events in quadrant C5,019,6931,138,657
Events in quadrant D15,985,918676,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232823
B0215122
C0209452
D0543312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9950510.512563%
B9950610.613065%
C9950210.211055%
D9950410941.296482%

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 13236 9952 18 18 0.14% 0.18%
B 13236 9952 24 24 0.18% 0.24%
C 13236 9952 13 13 0.10% 0.13%
D 13236 9952 3996 3996 30.19% 40.15%

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 583436 2479.42 1166 1144 234.8
A 12 16 297791 1263.14 1166 1144 234.8
A 15 222 92264 387.99 1166 1144 234.8
B 0 229 279076 1250.16 1160 1129 222.3
B 5 172 60317 266.22 1160 1129 222.3
B 0 189 39157 171.04 1160 1129 222.3
C 15 214 401267 1510.14 1139 1148 265.0
C 14 254 55355 204.59 1139 1148 265.0
C 1 23 52856 195.16 1139 1148 265.0
D 1 52 9553546 39304.53 991 964 243.0
D 13 138 1056692 4343.84 991 964 243.0
D 12 233 411946 1691.0 991 964 243.0

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