ASTROSAT CZTI

Data Quality Report

Orbit 45169

Creation date: 2024-06-27T23:10:09.684582
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_049T05_9000006050_45169cztM0_level2.fits modeM0/AS1A13_049T05_9000006050_45169cztM0_level2_quad_clean.evt
Size (bytes)510,575,040112,268,160
Size486.9 MB 107.1 MB
Events in quadrant A6,195,238724,572
Events in quadrant B4,251,795777,641
Events in quadrant C3,050,677773,269
Events in quadrant D4,908,093679,389

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230412
B0169302
C0132042
D0190452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63714226.623764%
B63712764.332130%
C6371240.376707%
D63712994.693141%

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 7586 6371 258 258 3.40% 4.05%
B 7586 6372 125 125 1.65% 1.96%
C 7586 6372 5 5 0.07% 0.08%
D 7586 6372 251 251 3.31% 3.94%

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 2413187 15941.74 732 718 151.3
A 15 223 917349 6057.15 732 718 151.3
A 2 79 27028 173.86 732 718 151.3
B 3 112 612479 4264.52 750 726 143.5
B 4 171 408418 2842.02 750 726 143.5
B 0 183 76274 526.64 750 726 143.5
C 12 2 21339 115.42 764 770 178.2
C 2 14 20667 111.65 764 770 178.2
C 7 206 11435 59.85 764 770 178.2
D 13 249 584852 3224.68 740 720 181.1
D 1 52 563917 3109.11 740 720 181.1
D 5 235 426017 2347.84 740 720 181.1

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