ASTROSAT CZTI

Data Quality Report

Orbit 24834

Creation date: 2024-06-27T19:10:24.631036
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/AS1A08_003T02_9000003630_24834cztM0_level2.evt modeM0/AS1A08_003T02_9000003630_24834cztM0_level2_quad_clean.evt
Size (bytes)83,298,24024,312,960
Size79.4 MB 23.2 MB
Events in quadrant A577,483165,479
Events in quadrant B590,508169,108
Events in quadrant C592,377158,060
Events in quadrant D679,214153,966

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024021
B024421
C024321
D027631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A117530.255319%
B117520.170213%
C117580.680851%
D1175242.042553%

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 1175 1175 0 0 0.00% 0.00%
B 1175 1175 0 0 0.00% 0.00%
C 1175 1175 0 0 0.00% 0.00%
D 1175 1175 14 14 1.19% 1.19%

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 13 254 1927 56.02 149 146 31.8
A 3 137 1353 37.96 149 146 31.8
A 0 226 1271 35.38 149 146 31.8
B 12 111 3479 110.65 149 145 30.1
B 7 202 3124 98.87 149 145 30.1
B 11 111 3049 96.38 149 145 30.1
C 14 238 23760 654.26 145 146 36.1
C 7 247 3472 92.15 145 146 36.1
C 13 61 891 20.64 145 146 36.1
D 12 218 105775 2907.51 144 140 36.3
D 8 195 20289 554.58 144 140 36.3
D 2 234 5027 134.51 144 140 36.3

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