ASTROSAT CZTI

Data Quality Report

Orbit 34521

Creation date: 2022-02-15T14:26:44.126422
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/AS1A05_103T05_9000004930_34521cztM0_level2.evt modeM0/AS1A05_103T05_9000004930_34521cztM0_level2_quad_clean.evt
Size (bytes)481,861,44074,632,320
Size459.5 MB 71.2 MB
Events in quadrant A2,488,534485,318
Events in quadrant B3,984,172473,297
Events in quadrant C2,806,367479,054
Events in quadrant D4,953,873450,175

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108991
B0154631
C0115171
D0185171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A532090.169173%
B53204768.947368%
C5320130.244361%
D53203586.729323%

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 6663 5321 2 2 0.03% 0.04%
B 6663 5321 285 285 4.28% 5.36%
C 6663 5321 9 9 0.14% 0.17%
D 6663 5321 292 292 4.38% 5.49%

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 25299 195.72 625 613 126.1
A 9 143 19207 147.42 625 613 126.1
A 13 6 10747 80.35 625 613 126.1
B 5 172 1115970 9591.31 601 586 116.3
B 0 190 148141 1268.84 601 586 116.3
B 0 229 106502 910.78 601 586 116.3
C 15 214 221132 1558.09 610 615 141.5
C 14 67 143215 1007.56 610 615 141.5
C 0 10 44110 307.32 610 615 141.5
D 8 195 752974 4698.86 596 581 160.1
D 12 17 351539 2191.81 596 581 160.1
D 10 203 341187 2127.16 596 581 160.1

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