ASTROSAT CZTI

Data Quality Report

Orbit 58114

Creation date: 2026-06-25T10:57:44.940093
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_042T02_9000006586_58114cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58114cztM0_level2_quad_clean.evt
Size (bytes)1,446,978,240275,474,880
Size1.3 GB 262.7 MB
Events in quadrant A8,988,3831,832,140
Events in quadrant B15,839,5921,870,457
Events in quadrant C9,043,7141,756,729
Events in quadrant D18,166,5141,523,017

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03980
B03980
C03980
D03980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0411963
B0604603
C0416838
D0673803

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A197142551.293497%
B1971515017.613492%
C197131590.806574%
D1971419419.845795%

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 20844 19717 26 26 0.12% 0.13%
B 20845 19718 796 796 3.82% 4.04%
C 20845 19717 28 28 0.13% 0.14%
D 20844 19717 1709 1709 8.20% 8.67%

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 11 3 160497 292.39 2202 2144 541.6
A 3 245 126570 229.75 2202 2144 541.6
A 3 14 71853 128.71 2202 2144 541.6
B 10 128 6142666 13547.33 2111 2021 453.3
B 5 172 499988 1098.6 2111 2021 453.3
B 4 171 227172 496.72 2111 2021 453.3
C 9 38 225001 385.87 2131 2117 577.6
C 12 252 180589 308.98 2131 2117 577.6
C 12 250 88738 149.96 2131 2117 577.6
D 12 110 7963217 13705.95 2054 1964 580.9
D 2 249 618035 1060.62 2054 1964 580.9
D 8 160 547760 939.63 2054 1964 580.9

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