ASTROSAT CZTI

Data Quality Report

Orbit 34622

Creation date: 2022-02-23T10:57:28.266834
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_058T02_9000004954_34622cztM0_level2.evt modeM0/AS1A11_058T02_9000004954_34622cztM0_level2_quad_clean.evt
Size (bytes)503,291,52073,324,800
Size480.0 MB 69.9 MB
Events in quadrant A2,646,434471,462
Events in quadrant B3,960,171463,083
Events in quadrant C2,967,168463,297
Events in quadrant D5,294,909436,422

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113543
B0152632
C0120162
D0195792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5516120.217549%
B55164117.451051%
C5516671.214648%
D55162173.934010%

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 7309 5517 3 3 0.04% 0.05%
B 7309 5517 277 277 3.79% 5.02%
C 7309 5517 51 51 0.70% 0.92%
D 7309 5517 142 142 1.94% 2.57%

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 15 174 51203 386.52 657 646 130.8
A 10 83 44009 331.52 657 646 130.8
A 13 254 9302 66.18 657 646 130.8
B 5 172 1283043 10587.53 631 616 121.1
B 4 171 69553 569.13 631 616 121.1
B 0 189 59063 482.53 631 616 121.1
C 15 214 229797 1579.1 626 631 145.1
C 0 10 210386 1445.34 626 631 145.1
C 14 67 73472 501.92 626 631 145.1
D 8 195 2259103 14916.73 622 605 151.4
D 2 249 303529 2000.73 622 605 151.4
D 12 6 66644 436.17 622 605 151.4

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