ASTROSAT CZTI

Data Quality Report

Orbit 57684

Creation date: 2026-05-27T11:07:22.096012
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_125T09_9000006578_57684cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57684cztM0_level2_quad_clean.evt
Size (bytes)448,666,56083,782,080
Size427.9 MB 79.9 MB
Events in quadrant A2,527,605587,303
Events in quadrant B5,981,737487,388
Events in quadrant C3,807,395545,041
Events in quadrant D3,848,113519,007

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116791
B0217112
C0151281
D0153751

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5695550.965759%
B5694146325.693713%
C56952694.723442%
D56951632.862160%

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 6890 5696 9 9 0.13% 0.16%
B 6889 5695 1110 1110 16.11% 19.49%
C 6890 5696 197 197 2.86% 3.46%
D 6890 5696 131 131 1.90% 2.30%

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 7 223 36221 224.76 640 623 158.4
A 3 14 9343 55.06 640 623 158.4
A 3 137 7410 42.85 640 623 158.4
B 5 185 3639401 30885.37 552 531 117.8
B 10 16 44683 374.75 552 531 117.8
B 0 213 37787 316.22 552 531 117.8
C 15 224 765752 4574.93 617 610 167.2
C 12 254 407160 2430.84 617 610 167.2
C 12 2 75038 445.02 617 610 167.2
D 8 160 824422 4737.08 619 591 173.9
D 2 120 263714 1512.97 619 591 173.9
D 8 240 196658 1127.4 619 591 173.9

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