ASTROSAT CZTI

Data Quality Report

Orbit 46180

Creation date: 2024-06-27T23:20:03.230472
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/AS1T05_194T01_9000006180_46180cztM0_level2.fits modeM0/AS1T05_194T01_9000006180_46180cztM0_level2_quad_clean.evt
Size (bytes)1,681,536,960305,196,480
Size1.6 GB 291.1 MB
Events in quadrant A17,210,6362,078,676
Events in quadrant B12,513,7542,125,118
Events in quadrant C9,623,3142,050,726
Events in quadrant D21,344,4861,599,630

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04040
B04040
C04040
D04040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0634582
B0502045
C0432952
D0772922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A201236143.051235%
B201218574.259232%
C201233421.699548%
D20124362217.998410%

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 20418 20124 89 89 0.44% 0.44%
B 20418 20124 255 255 1.25% 1.27%
C 20418 20125 74 74 0.36% 0.37%
D 20419 20125 2821 2821 13.82% 14.02%

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 10 83 8127614 17557.7 2225 2172 462.8
A 9 191 341107 732.38 2225 2172 462.8
A 0 247 78496 164.92 2225 2172 462.8
B 3 112 2564562 5962.49 2209 2139 429.8
B 15 201 639240 1482.47 2209 2139 429.8
B 0 155 401112 928.37 2209 2139 429.8
C 14 254 429368 837.23 2194 2201 510.2
C 12 2 408667 796.66 2194 2201 510.2
C 3 233 170318 329.5 2194 2201 510.2
D 1 52 5790084 11479.33 2014 1948 504.2
D 2 249 3920412 7771.3 2014 1948 504.2
D 2 37 1495404 2961.9 2014 1948 504.2

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