ASTROSAT CZTI

Data Quality Report

Orbit 50623

Creation date: 2025-02-06T03:50:36.214167
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/AS1T05_239T01_9000006444_50623cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50623cztM0_level2_quad_clean.evt
Size (bytes)563,696,64090,907,200
Size537.6 MB 86.7 MB
Events in quadrant A3,541,418626,630
Events in quadrant B7,468,631546,124
Events in quadrant C3,918,801614,459
Events in quadrant D5,439,404517,695

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150042
B0266722
C0161152
D0207822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64141692.634861%
B6413150423.452362%
C64131492.323406%
D641380212.505847%

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 7599 6415 98 98 1.29% 1.53%
B 7597 6412 1235 1235 16.26% 19.26%
C 7598 6413 100 100 1.32% 1.56%
D 7598 6413 747 747 9.83% 11.65%

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 8 247 140486 802.56 691 672 174.2
A 6 161 117432 670.22 691 672 174.2
A 4 3 111901 638.47 691 672 174.2
B 4 170 2569258 19194.02 632 610 133.8
B 5 172 840112 6273.11 632 610 133.8
B 7 0 497785 3715.1 632 610 133.8
C 15 232 320014 1662.1 688 680 192.1
C 13 3 119319 617.5 688 680 192.1
C 15 199 93489 483.06 688 680 192.1
D 1 47 1825651 10164.99 644 621 179.5
D 2 249 203305 1128.9 644 621 179.5
D 8 176 129480 717.71 644 621 179.5

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