ASTROSAT CZTI

Data Quality Report

Orbit 57048

Creation date: 2026-04-14T16:28:51.699531
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_083T10_9000006566_57048cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57048cztM0_level2_quad_clean.evt
Size (bytes)515,897,280112,821,120
Size492.0 MB 107.6 MB
Events in quadrant A3,696,671736,560
Events in quadrant B4,274,735777,653
Events in quadrant C5,090,211699,018
Events in quadrant D5,421,562653,633

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167252
B0183712
C0203886
D0217012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78962633.330800%
B78974385.546410%
C78964285.420466%
D78964625.851064%

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 8031 7898 4 4 0.05% 0.05%
B 8032 7897 94 94 1.17% 1.19%
C 8030 7897 257 257 3.20% 3.25%
D 8031 7897 239 239 2.98% 3.03%

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 7 64 112791 514.72 887 863 217.5
A 4 249 61511 278.9 887 863 217.5
A 4 13 23295 103.16 887 863 217.5
B 10 16 369863 2023.63 845 813 182.4
B 0 63 237932 1300.2 845 813 182.4
B 0 213 144003 785.16 845 813 182.4
C 9 38 698250 3017.39 851 841 231.1
C 1 16 258049 1112.83 851 841 231.1
C 15 209 230124 992.01 851 841 231.1
D 15 142 1158097 4897.22 850 811 236.3
D 7 96 301763 1273.52 850 811 236.3
D 12 33 160183 674.4 850 811 236.3

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