ASTROSAT CZTI

Data Quality Report

Orbit 40094

Creation date: 2024-06-27T22:12:16.617404
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/AS1A12_004T01_9000005520_40094cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40094cztM0_level2_quad_clean.evt
Size (bytes)457,692,48086,178,240
Size436.5 MB 82.2 MB
Events in quadrant A3,115,495603,212
Events in quadrant B2,709,755616,974
Events in quadrant C7,034,907479,037
Events in quadrant D3,661,202530,631

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127733
B0116752
C0246892
D0148922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5417751.384530%
B5417701.292228%
C5417137425.364593%
D54173055.630423%

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 7149 5418 36 36 0.50% 0.66%
B 7149 5418 42 42 0.59% 0.78%
C 7149 5418 1160 1160 16.23% 21.41%
D 7149 5418 244 244 3.41% 4.50%

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 472727 3844.77 596 583 122.8
A 13 248 151749 1230.98 596 583 122.8
A 2 79 131115 1062.95 596 583 122.8
B 10 246 151329 1287.78 597 582 117.1
B 0 189 82895 703.17 597 582 117.1
B 0 230 61325 518.91 597 582 117.1
C 9 187 4456006 35407.4 537 540 125.8
C 15 214 204155 1618.12 537 540 125.8
C 3 233 121399 960.46 537 540 125.8
D 12 227 565577 4043.16 573 558 139.7
D 13 249 432618 3091.73 573 558 139.7
D 12 233 118525 844.15 573 558 139.7

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