ASTROSAT CZTI

Data Quality Report

Orbit 57963

Creation date: 2026-06-15T06:12:16.082787
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_031T01_9000006584_57963cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57963cztM0_level2_quad_clean.evt
Size (bytes)652,481,28097,871,040
Size622.3 MB 93.3 MB
Events in quadrant A5,489,198657,950
Events in quadrant B4,127,448713,668
Events in quadrant C4,020,776646,169
Events in quadrant D9,957,009444,171

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214042
B0173382
C0171762
D0345112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71985006.946374%
B71983014.181717%
C71981191.653237%
D7199215529.934713%

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 8843 7199 332 332 3.75% 4.61%
B 8843 7200 128 128 1.45% 1.78%
C 8843 7200 86 86 0.97% 1.19%
D 8844 7201 1960 1960 22.16% 27.22%

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 10 251 2451922 12885.1 769 749 190.2
A 3 14 20281 102.67 769 749 190.2
A 3 245 13844 68.84 769 749 190.2
B 5 185 561889 3346.1 773 745 167.7
B 0 213 143868 853.44 773 745 167.7
B 10 128 132782 787.34 773 745 167.7
C 15 224 739768 3551.0 758 749 208.1
C 1 16 168073 803.99 758 749 208.1
C 11 244 56201 266.45 758 749 208.1
D 12 110 6814483 36051.24 660 632 189.0
D 8 240 144850 763.04 660 632 189.0
D 3 12 115452 607.5 660 632 189.0

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