ASTROSAT CZTI

Data Quality Report

Orbit 52916

Creation date: 2025-07-16T22:09:14.593859
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_011T06_9000006484_52916cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52916cztM0_level2_quad_clean.evt
Size (bytes)918,990,72054,901,440
Size876.4 MB 52.4 MB
Events in quadrant A14,239,79120,063
Events in quadrant B3,740,325551,887
Events in quadrant C3,424,788503,831
Events in quadrant D12,176,619191,680

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046680424
B01516159
C01456384
D040401402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01162
C01162
D01162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5635547697.178350%
B56593726.573600%
C56481562.762040%
D5633373966.376709%

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 6680 5650 4993 4993 74.75% 88.37%
B 6698 5670 251 251 3.75% 4.43%
C 6694 5659 82 82 1.22% 1.45%
D 6683 5648 3733 3733 55.86% 66.09%

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 13083282 231750.92 219 214 56.5
A 12 17 78355 1384.17 219 214 56.5
A 12 115 67689 1195.24 219 214 56.5
B 1 255 845923 6839.72 574 553 123.6
B 12 32 173743 1401.25 574 553 123.6
B 5 185 158390 1277.03 574 553 123.6
C 7 80 672781 4359.46 563 559 154.2
C 1 45 133553 862.49 563 559 154.2
C 12 254 73398 472.37 563 559 154.2
D 15 78 7908886 65859.47 416 397 120.1
D 8 176 1732570 14425.01 416 397 120.1
D 15 125 281178 2338.26 416 397 120.1

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