ASTROSAT CZTI

Data Quality Report

Orbit 04437

Creation date: 2024-06-27T14:41:59.081515
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/AS1G05_214T01_9000000552_04437cztM0_level2.evt modeM0/AS1G05_214T01_9000000552_04437cztM0_level2_quad_clean.evt
Size (bytes)1,217,960,640198,397,440
Size1.1 GB 189.2 MB
Events in quadrant A8,444,3171,182,936
Events in quadrant B9,755,0201,199,579
Events in quadrant C8,250,3841,211,874
Events in quadrant D9,189,8601,144,527

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0384144
B0417693
C0378283
D0410053

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184202661.444083%
B184204892.654723%
C184201460.792617%
D184203822.073833%

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 20140 18423 44 44 0.22% 0.24%
B 20140 18423 262 262 1.30% 1.42%
C 20140 18423 0 0 0.00% 0.00%
D 20140 18423 183 183 0.91% 0.99%

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 0 13 189861 435.64 2112 2065 431.1
A 0 118 97613 221.65 2112 2065 431.1
A 0 226 28521 61.37 2112 2065 431.1
B 14 167 1353203 3292.93 2137 2087 410.3
B 4 48 82099 195.0 2137 2087 410.3
B 12 111 39503 91.19 2137 2087 410.3
C 7 239 48063 93.88 2084 2094 489.6
C 9 247 43655 84.88 2084 2094 489.6
C 13 61 17174 30.8 2084 2094 489.6
D 13 239 479602 961.36 2051 1992 496.8
D 14 34 377810 756.47 2051 1992 496.8
D 2 136 192109 382.68 2051 1992 496.8

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