ASTROSAT CZTI

Data Quality Report

Orbit 59183

Creation date: 2026-09-07T10:50:07.144269
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/AS1T05_271T01_9000006604_59183cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59183cztM0_level2_quad_clean.evt
Size (bytes)598,847,04092,534,400
Size571.1 MB 88.2 MB
Events in quadrant A3,543,763652,094
Events in quadrant B3,640,003694,849
Events in quadrant C3,342,859629,401
Events in quadrant D11,133,243370,035

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150632
B0154842
C0147872
D0376295

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6535400.612089%
B65351722.631982%
C6535570.872226%
D6534270541.398837%

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 7615 6536 28 28 0.37% 0.43%
B 7615 6536 113 113 1.48% 1.73%
C 7615 6536 40 40 0.53% 0.61%
D 7614 6535 2491 2491 32.72% 38.12%

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 3 14 503728 2857.78 715 697 176.0
A 10 251 199641 1130.23 715 697 176.0
A 3 245 43478 243.04 715 697 176.0
B 4 236 460526 3022.67 707 678 152.1
B 4 171 191168 1252.13 707 678 152.1
B 4 201 62003 403.1 707 678 152.1
C 3 233 270279 1385.4 703 696 194.6
C 14 254 161130 824.48 703 696 194.6
C 9 38 69753 354.89 703 696 194.6
D 12 110 6674045 40264.98 581 554 165.7
D 2 31 1468287 8855.67 581 554 165.7
D 11 129 221499 1333.09 581 554 165.7

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

TCT plots

Parameter TCT0 TCT_healed
Tct