ASTROSAT CZTI

Data Quality Report

Orbit 28789

Creation date: 2024-06-27T19:56:21.084756
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/AS1A10_103T01_9000004132_28789cztM0_level2.evt modeM0/AS1A10_103T01_9000004132_28789cztM0_level2_quad_clean.evt
Size (bytes)672,094,080102,378,240
Size641.0 MB 97.6 MB
Events in quadrant A3,433,522679,656
Events in quadrant B3,544,406711,450
Events in quadrant C3,912,602678,364
Events in quadrant D9,035,787588,241

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140522
B0144442
C0157792
D0313502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6343380.599086%
B6343961.513479%
C63432023.184613%
D6343135221.314835%

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 7598 6343 5 5 0.07% 0.08%
B 7598 6343 28 28 0.37% 0.44%
C 7598 6343 1 1 0.01% 0.02%
D 7597 6342 1328 1328 17.48% 20.94%

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 14 235 189202 1147.09 831 815 164.2
A 4 2 15902 91.86 831 815 164.2
A 13 254 12233 69.52 831 815 164.2
B 10 246 208334 1345.62 839 820 154.2
B 12 111 18205 112.73 839 820 154.2
B 0 229 17816 110.21 839 820 154.2
C 3 233 512307 2690.68 820 827 190.1
C 14 238 156194 817.32 820 827 190.1
C 14 254 38405 197.68 820 827 190.1
D 1 52 3412222 18971.76 759 739 179.8
D 8 195 1384303 7694.2 759 739 179.8
D 13 104 1231998 6847.21 759 739 179.8

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