ASTROSAT CZTI

Data Quality Report

Orbit 45948

Creation date: 2024-06-27T23:18:03.587259
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/AS1A13_071T06_9000006146_45948cztM0_level2.fits modeM0/AS1A13_071T06_9000006146_45948cztM0_level2_quad_clean.evt
Size (bytes)693,630,72093,844,800
Size661.5 MB 89.5 MB
Events in quadrant A5,533,971686,706
Events in quadrant B11,893,395405,526
Events in quadrant C2,870,007684,468
Events in quadrant D4,876,040612,274

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210891
B0398475
C0134161
D0188251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64891261.941748%
B6489329350.747419%
C6489260.400678%
D64892143.297889%

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 7464 6490 32 32 0.43% 0.49%
B 7464 6489 2683 2683 35.95% 41.35%
C 7464 6490 7 7 0.09% 0.11%
D 7464 6490 281 281 3.76% 4.33%

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 2779263 19012.93 700 683 146.1
A 10 255 15317 100.14 700 683 146.1
A 0 243 13823 89.91 700 683 146.1
B 3 112 9431811 82479.76 579 560 114.3
B 4 158 99647 866.55 579 560 114.3
B 0 186 21006 178.8 579 560 114.3
C 12 249 46095 275.92 697 701 164.5
C 2 14 44314 265.1 697 701 164.5
C 14 254 21839 128.49 697 701 164.5
D 2 37 1067613 6152.77 687 665 173.4
D 11 241 473575 2727.13 687 665 173.4
D 10 255 242082 1392.18 687 665 173.4

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