ASTROSAT CZTI

Data Quality Report

Orbit 59162

Creation date: 2026-09-03T22:26:02.690626
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_59162cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59162cztM0_level2_quad_clean.evt
Size (bytes)719,778,24083,885,760
Size686.4 MB 80.0 MB
Events in quadrant A3,127,441673,377
Events in quadrant B3,263,519713,315
Events in quadrant C3,746,256629,321
Events in quadrant D15,977,64450,681

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140312
B0144372
C0157992
D0520962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6790781.148748%
B67901111.634757%
C6790821.207658%
D6790633493.284242%

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 7725 6790 4 4 0.05% 0.06%
B 7725 6790 24 24 0.31% 0.35%
C 7725 6790 35 35 0.45% 0.52%
D 7724 6789 5717 5717 74.02% 84.21%

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 15 248 62939 328.11 772 753 189.5
A 10 251 25416 130.13 772 753 189.5
A 3 48 10625 52.09 772 753 189.5
B 5 248 113445 694.67 758 730 162.3
B 5 185 81043 494.97 758 730 162.3
B 12 111 19849 117.83 758 730 162.3
C 5 250 411630 2033.22 746 741 202.1
C 12 252 213319 1051.91 746 741 202.1
C 14 254 71986 352.54 746 741 202.1
D 12 1 12252235 203068.71 208 198 60.3
D 12 110 1337507 22164.94 208 198 60.3
D 11 129 564859 9358.85 208 198 60.3

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