ASTROSAT CZTI

Data Quality Report

Orbit 59267

Creation date: 2026-09-10T22:25:24.493834
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_59267cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59267cztM0_level2_quad_clean.evt
Size (bytes)463,060,80098,835,840
Size441.6 MB 94.3 MB
Events in quadrant A3,526,998660,513
Events in quadrant B3,231,709713,227
Events in quadrant C3,766,843630,968
Events in quadrant D6,116,338540,245

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148842
B0139542
C0152682
D0227422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64191732.695124%
B64191612.508179%
C64191943.022278%
D641984413.148465%

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 7564 6420 60 60 0.79% 0.93%
B 7564 6420 25 25 0.33% 0.39%
C 7564 6420 111 111 1.47% 1.73%
D 7564 6420 644 644 8.51% 10.03%

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 346197 1904.79 745 728 181.4
A 0 24 185534 1018.95 745 728 181.4
A 3 14 69414 378.71 745 728 181.4
B 4 201 130799 819.03 739 712 158.8
B 4 236 71526 445.85 739 712 158.8
B 0 157 37652 232.57 739 712 158.8
C 12 252 444036 2226.13 730 724 199.1
C 3 233 264012 1322.12 730 724 199.1
C 14 254 93006 463.4 730 724 199.1
D 11 129 1710795 8615.6 699 666 198.5
D 2 249 1039192 5232.08 699 666 198.5
D 12 110 439118 2208.91 699 666 198.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct