ASTROSAT CZTI

Data Quality Report

Orbit 36216

Creation date: 2022-06-10T02:12:24.744727
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_080T02_9000005176_36216cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36216cztM0_level2_quad_clean.evt
Size (bytes)533,574,72066,035,520
Size508.9 MB 63.0 MB
Events in quadrant A2,943,205438,315
Events in quadrant B3,391,208441,426
Events in quadrant C3,203,832434,787
Events in quadrant D6,272,178323,384

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119193
B0133302
C0128102
D0222382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5149200.388425%
B51491392.699553%
C51491011.961546%
D5149109421.246844%

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 7092 5150 8 8 0.11% 0.16%
B 7092 5150 94 94 1.33% 1.83%
C 7092 5150 79 79 1.11% 1.53%
D 7092 5150 1068 1068 15.06% 20.74%

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 15 223 319527 2579.86 618 605 123.6
A 10 83 183390 1478.6 618 605 123.6
A 9 143 19546 153.22 618 605 123.6
B 5 172 256185 2189.39 615 600 116.7
B 0 190 197956 1690.59 615 600 116.7
B 5 236 141821 1209.73 615 600 116.7
C 0 10 579372 4143.84 603 610 139.7
C 15 214 215567 1539.06 603 610 139.7
C 1 23 38676 272.55 603 610 139.7
D 12 235 1003805 7757.1 527 513 129.3
D 10 253 867455 6702.89 527 513 129.3
D 12 227 772614 5969.62 527 513 129.3

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