ASTROSAT CZTI

Data Quality Report

Orbit 53758

Creation date: 2025-09-05T10:11:15.211969
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_022T04_9000006506_53758cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53758cztM0_level2_quad_clean.evt
Size (bytes)826,876,80082,857,600
Size788.6 MB 79.0 MB
Events in quadrant A14,500,236213,385
Events in quadrant B3,830,733679,036
Events in quadrant C6,089,484567,746
Events in quadrant D5,659,036572,668

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0477607
B0163692
C0228352
D0216062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6829469068.677698%
B68291772.591888%
C682970410.308976%
D68293404.978767%

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 7828 6828 4624 4624 59.07% 67.72%
B 7829 6830 88 88 1.12% 1.29%
C 7829 6830 650 650 8.30% 9.52%
D 7829 6830 379 379 4.84% 5.55%

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 63 12110177 96562.71 502 491 125.4
A 8 245 122543 973.24 502 491 125.4
A 3 78 113299 899.53 502 491 125.4
B 4 81 738116 4849.23 708 683 152.1
B 6 255 58016 377.01 708 683 152.1
B 5 185 50441 327.2 708 683 152.1
C 15 224 2137949 11438.03 672 665 186.9
C 1 241 774565 4141.66 672 665 186.9
C 14 254 93742 498.12 672 665 186.9
D 2 172 1607293 8231.2 687 659 195.2
D 10 172 764734 3914.55 687 659 195.2
D 7 70 152844 779.68 687 659 195.2

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