ASTROSAT CZTI

Data Quality Report

Orbit 34431

Creation date: 2022-02-09T13:59:24.929498
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_058T05_9000004918_34431cztM0_level2.evt modeM0/AS1A10_058T05_9000004918_34431cztM0_level2_quad_clean.evt
Size (bytes)82,195,20016,989,120
Size78.4 MB 16.2 MB
Events in quadrant A484,603110,806
Events in quadrant B752,199111,650
Events in quadrant C570,667110,445
Events in quadrant D612,943106,082

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020062
B028281
C022201
D024701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A96720.206825%
B967848.686660%
C967181.861427%
D96750.517063%

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 967 967 0 0 0.00% 0.00%
B 967 967 49 49 5.07% 5.07%
C 967 967 13 13 1.34% 1.34%
D 967 967 3 3 0.31% 0.31%

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 15859 602.15 120 117 26.1
A 13 6 3058 112.5 120 117 26.1
A 13 254 1224 42.34 120 117 26.1
B 5 172 284757 11661.35 115 112 24.4
B 0 190 7759 313.28 115 112 24.4
B 15 201 4240 169.12 115 112 24.4
C 0 10 57183 1987.48 117 118 28.7
C 15 214 44539 1547.11 117 118 28.7
C 14 67 6654 227.64 117 118 28.7
D 8 195 52880 1741.01 118 114 30.3
D 7 223 29642 974.27 118 114 30.3
D 2 249 21089 692.07 118 114 30.3

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