ASTROSAT CZTI

Data Quality Report

Orbit 53615

Creation date: 2025-08-26T15:53:24.532746
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/AS1A14_004T05_9000006502_53615cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53615cztM0_level2_quad_clean.evt
Size (bytes)1,002,384,00071,510,400
Size955.9 MB 68.2 MB
Events in quadrant A14,195,716141,493
Events in quadrant B5,836,331641,954
Events in quadrant C11,745,598348,519
Events in quadrant D4,830,222584,239

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0465812
B0216617
C0392052
D0186862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6436524681.510255%
B643594314.654235%
C6435327250.846931%
D64352974.615385%

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 7605 6422 4783 4783 62.89% 74.48%
B 7604 6434 644 644 8.47% 10.01%
C 7605 6435 3160 3160 41.55% 49.11%
D 7605 6435 189 189 2.49% 2.94%

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 3 78 6921781 80059.96 343 334 86.5
A 4 95 5444668 62974.28 343 334 86.5
A 3 63 225547 2605.03 343 334 86.5
B 10 254 2006405 13141.91 715 691 152.6
B 5 172 283606 1853.73 715 691 152.6
B 15 20 213916 1397.1 715 691 152.6
C 1 241 7675894 53854.98 522 518 142.5
C 15 224 1016852 7131.2 522 518 142.5
C 15 178 500647 3509.2 522 518 142.5
D 8 176 1069656 5205.75 717 685 205.3
D 2 153 163171 791.29 717 685 205.3
D 10 172 134133 649.87 717 685 205.3

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