ASTROSAT CZTI

Data Quality Report

Orbit 42754

Creation date: 2024-06-27T22:43:51.536348
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/AS1A05_013T01_9000005822_42754cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42754cztM0_level2_quad_clean.evt
Size (bytes)420,405,12098,424,000
Size400.9 MB 93.9 MB
Events in quadrant A4,064,148655,480
Events in quadrant B3,073,948656,104
Events in quadrant C5,145,976647,482
Events in quadrant D2,822,652611,317

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157032
B0130442
C0195132
D0124432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58621712.917093%
B5862941.603548%
C58621863.172979%
D5862230.392358%

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 7264 5863 130 130 1.79% 2.22%
B 7264 5863 81 81 1.12% 1.38%
C 7264 5863 179 179 2.46% 3.05%
D 7264 5863 17 17 0.23% 0.29%

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 13 248 831050 6192.88 651 637 134.1
A 10 83 614234 4575.96 651 637 134.1
A 12 189 94100 697.01 651 637 134.1
B 5 172 253116 2011.21 641 624 125.5
B 10 246 133201 1056.04 641 624 125.5
B 5 255 74447 588.03 641 624 125.5
C 0 239 2291780 15344.73 633 637 149.3
C 15 214 244661 1634.33 633 637 149.3
C 14 254 116531 776.19 633 637 149.3
D 2 249 109296 687.16 645 627 158.1
D 1 52 52184 326.02 645 627 158.1
D 5 171 42477 264.64 645 627 158.1

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