ASTROSAT CZTI

Data Quality Report

Orbit 37547

Creation date: 2024-06-27T21:41:22.293876
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_051T01_9000005334_37547cztM0_level2.evt modeM0/AS1T05_051T01_9000005334_37547cztM0_level2_quad_clean.evt
Size (bytes)474,235,20066,306,240
Size452.3 MB 63.2 MB
Events in quadrant A2,833,538423,040
Events in quadrant B2,874,486427,257
Events in quadrant C3,055,349413,308
Events in quadrant D5,243,258376,466

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118063
B0118272
C0122752
D0191292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5242150.286150%
B5242541.030141%
C52421342.556276%
D52423867.363602%

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 7034 5243 7 7 0.10% 0.13%
B 7034 5243 29 29 0.41% 0.55%
C 7034 5243 145 145 2.06% 2.77%
D 7034 5243 517 517 7.35% 9.86%

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 315001 2562.22 603 592 122.7
A 15 222 136109 1104.37 603 592 122.7
A 6 10 17296 136.13 603 592 122.7
B 5 172 107402 915.48 603 589 116.7
B 5 255 94474 804.68 603 589 116.7
B 4 81 81765 695.75 603 589 116.7
C 14 254 245562 1823.42 576 582 134.4
C 15 214 223048 1655.84 576 582 134.4
C 0 10 189417 1405.52 576 582 134.4
D 12 235 2349586 16726.81 567 551 140.4
D 2 249 222509 1580.5 567 551 140.4
D 2 153 174214 1236.6 567 551 140.4

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