ASTROSAT CZTI

Data Quality Report

Orbit 56914

Creation date: 2026-04-05T15:46:52.101936
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_083T14_9000006564_56914cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56914cztM0_level2_quad_clean.evt
Size (bytes)586,373,76083,093,760
Size559.2 MB 79.2 MB
Events in quadrant A3,021,983583,425
Events in quadrant B4,474,506604,014
Events in quadrant C9,518,347399,053
Events in quadrant D4,232,683516,664

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132291
B0174101
C0323971
D0166971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59091562.640041%
B59094217.124725%
C5910198233.536379%
D59102884.873096%

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 7019 5910 71 71 1.01% 1.20%
B 7019 5910 228 228 3.25% 3.86%
C 7020 5910 1838 1838 26.18% 31.10%
D 7020 5911 239 239 3.40% 4.04%

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 4 249 236974 1508.72 640 626 156.7
A 7 64 192131 1222.47 640 626 156.7
A 3 14 30438 190.3 640 626 156.7
B 5 172 1223744 9506.86 616 595 128.7
B 10 16 249245 1932.62 616 595 128.7
B 0 197 147559 1142.27 616 595 128.7
C 9 38 6798431 44833.56 554 547 151.6
C 13 3 408996 2693.81 554 547 151.6
C 6 223 26136 168.77 554 547 151.6
D 11 129 696794 4002.0 616 587 174.0
D 2 249 397779 2283.17 616 587 174.0
D 8 240 390230 2239.78 616 587 174.0

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