ASTROSAT CZTI

Data Quality Report

Orbit 52293

Creation date: 2025-07-22T12:11:36.342485
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/AS1C09_011T05_9000006474_52293cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52293cztM0_level2_quad_clean.evt
Size (bytes)891,126,72075,720,960
Size849.8 MB 72.2 MB
Events in quadrant A4,032,585781,055
Events in quadrant B4,482,821731,790
Events in quadrant C12,784,99575,732
Events in quadrant D11,216,555280,914

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162071
B0174661
C0421661
D0374801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60632694.436747%
B60642874.732850%
C6064538688.819261%
D6064310051.121372%

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 7163 6064 146 146 2.04% 2.41%
B 7164 6065 173 173 2.41% 2.85%
C 7163 6063 4032 4032 56.29% 66.50%
D 7164 6064 3015 3015 42.09% 49.72%

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 12 3 370019 1798.41 711 694 205.4
A 3 62 282431 1371.9 711 694 205.4
A 4 249 148551 719.98 711 694 205.4
B 7 0 547893 3708.08 660 644 147.6
B 10 44 372172 2517.42 660 644 147.6
B 0 216 167427 1130.1 660 644 147.6
C 0 161 4474774 71135.73 212 210 62.9
C 15 178 2632210 41843.01 212 210 62.9
C 15 158 1923844 30581.55 212 210 62.9
D 15 93 7453418 50718.11 478 456 146.9
D 8 176 669729 4554.47 478 456 146.9
D 12 1 376494 2558.97 478 456 146.9

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