ASTROSAT CZTI

Data Quality Report

Orbit 59371

Creation date: 2026-09-17T23:12:25.553004
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_033T01_9000006608_59371cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59371cztM0_level2_quad_clean.evt
Size (bytes)487,290,24096,220,800
Size464.7 MB 91.8 MB
Events in quadrant A3,198,559658,025
Events in quadrant B3,880,018705,819
Events in quadrant C3,035,186632,321
Events in quadrant D7,425,232469,450

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139082
B0157092
C0135572
D0264253

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6417911.418108%
B64172183.397226%
C6417711.106436%
D6416154024.002494%

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 7562 6417 8 8 0.11% 0.12%
B 7562 6417 70 70 0.93% 1.09%
C 7562 6418 14 14 0.19% 0.22%
D 7560 6415 1461 1461 19.33% 22.77%

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 14 238 157995 874.9 738 718 179.8
A 3 14 98627 544.65 738 718 179.8
A 10 251 39772 217.25 738 718 179.8
B 5 236 313381 2034.1 724 696 153.7
B 5 185 235539 1527.72 724 696 153.7
B 4 171 184380 1194.92 724 696 153.7
C 12 252 53299 264.24 724 718 199.0
C 6 223 36802 181.33 724 718 199.0
C 4 5 29675 145.52 724 718 199.0
D 12 110 3519595 19208.19 650 620 183.2
D 1 27 1184907 6464.38 650 620 183.2
D 5 32 47717 257.07 650 620 183.2

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