ASTROSAT CZTI

Data Quality Report

Orbit 53037

Creation date: 2025-07-18T18:14:09.821658
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_011T07_9000006488_53037cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53037cztM0_level2_quad_clean.evt
Size (bytes)967,795,20077,676,480
Size923.0 MB 74.1 MB
Events in quadrant A11,604,267400,426
Events in quadrant B3,987,893674,741
Events in quadrant C8,152,402483,178
Events in quadrant D11,552,865316,996

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391763
B0168451
C0289741
D0390131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6825307445.040293%
B68262794.087313%
C6826160023.439789%
D6826335349.121008%

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 7584 6824 2840 2840 37.45% 41.62%
B 7586 6826 189 189 2.49% 2.77%
C 7586 6826 1548 1548 20.41% 22.68%
D 7586 6826 2875 2875 37.90% 42.12%

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 9 191 7838669 52716.62 592 578 148.7
A 7 206 538359 3616.95 592 578 148.7
A 4 249 364683 2448.86 592 578 148.7
B 10 44 393366 2690.74 690 666 145.9
B 4 81 305626 2089.56 690 666 145.9
B 10 247 188532 1287.24 690 666 145.9
C 1 241 3267408 19518.04 606 599 167.4
C 15 224 1238451 7395.73 606 599 167.4
C 15 147 272679 1625.58 606 599 167.4
D 8 176 3886949 27863.01 479 456 139.5
D 12 17 3531711 25316.24 479 456 139.5
D 15 78 1278840 9164.98 479 456 139.5

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