ASTROSAT CZTI

Data Quality Report

Orbit 52008

Creation date: 2025-05-10T12:07:34.376117
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/AS1C09_011T06_9000006468_52008cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52008cztM0_level2_quad_clean.evt
Size (bytes)891,740,16099,365,760
Size850.4 MB 94.8 MB
Events in quadrant A4,906,619686,032
Events in quadrant B9,053,254659,318
Events in quadrant C6,813,972639,849
Events in quadrant D11,639,899485,623

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199770
B0323250
C0256860
D0400200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77182142.772739%
B7717140818.245432%
C77177339.498510%
D7718221728.725058%

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 7718 7718 221 221 2.86% 2.86%
B 7717 7717 823 823 10.66% 10.66%
C 7717 7717 702 702 9.10% 9.10%
D 7718 7718 2142 2142 27.75% 27.75%

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 3 14 812187 4179.0 774 752 194.2
A 4 3 318243 1635.12 774 752 194.2
A 5 240 231834 1190.1 774 752 194.2
B 7 0 4159102 26738.88 738 713 155.5
B 4 206 663440 4261.4 738 713 155.5
B 4 171 263352 1688.79 738 713 155.5
C 15 224 2409407 11685.64 740 734 206.1
C 4 5 510965 2475.38 740 734 206.1
C 15 147 203215 982.33 740 734 206.1
D 2 172 3008275 15548.11 677 648 193.4
D 12 6 1482164 7658.79 677 648 193.4
D 12 17 1249267 6454.81 677 648 193.4

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