ASTROSAT CZTI

Data Quality Report

Orbit 19749

Creation date: 2024-06-27T18:06:30.564062
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/AS1C04_001T01_9000002948_19749cztM0_level2.evt modeM0/AS1C04_001T01_9000002948_19749cztM0_level2_quad_clean.evt
Size (bytes)827,472,960188,017,920
Size789.1 MB 179.3 MB
Events in quadrant A5,049,6031,255,584
Events in quadrant B5,460,6561,274,025
Events in quadrant C6,495,0141,217,655
Events in quadrant D7,300,0891,175,926

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011
B111
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022808131
B023833152
C026500140
D029551128

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111372382.137021%
B111363052.738865%
C111403813.420108%
D111407086.355476%

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 13629 11154 0 0 0.00% 0.00%
B 13629 11157 34 34 0.25% 0.30%
C 13629 11156 86 86 0.63% 0.77%
D 13628 11157 463 463 3.40% 4.15%

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 12 16 55611 210.04 1278 1248 258.8
A 0 23 32793 121.88 1278 1248 258.8
A 12 194 17427 62.51 1278 1248 258.8
B 7 220 245145 1011.31 1277 1243 241.2
B 4 216 64799 263.53 1277 1243 241.2
B 0 197 48710 196.82 1277 1243 241.2
C 3 233 1433225 5054.55 1227 1235 283.3
C 14 238 191131 670.28 1227 1235 283.3
C 7 247 50772 174.85 1227 1235 283.3
D 1 52 2113803 7090.93 1220 1179 297.9
D 7 38 240733 804.05 1220 1179 297.9
D 10 230 91087 301.77 1220 1179 297.9

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