ASTROSAT CZTI

Data Quality Report

Orbit 37936

Creation date: 2024-06-27T21:46:21.339044
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/AS1A11_082T01_9000005356_37936cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37936cztM0_level2_quad_clean.evt
Size (bytes)823,484,160117,411,840
Size785.3 MB 112.0 MB
Events in quadrant A6,723,997736,402
Events in quadrant B5,731,374723,406
Events in quadrant C5,275,399730,855
Events in quadrant D6,512,895651,170

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270974
B0240873
C0219313
D0268173

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10292890.864749%
B102922232.166731%
C10292500.485814%
D102924354.226584%

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 14980 10295 41 41 0.27% 0.40%
B 14980 10295 125 125 0.83% 1.21%
C 14980 10295 31 31 0.21% 0.30%
D 14980 10295 369 369 2.46% 3.58%

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 15 222 1500359 6425.17 1162 1141 233.3
A 10 83 635511 2718.71 1162 1141 233.3
A 13 248 30232 124.67 1162 1141 233.3
B 5 172 604398 2797.19 1146 1117 215.7
B 0 230 142155 653.94 1146 1117 215.7
B 0 189 111198 510.4 1146 1117 215.7
C 15 214 429284 1634.46 1136 1144 261.9
C 0 10 232224 882.17 1136 1144 261.9
C 14 254 93191 351.4 1136 1144 261.9
D 2 249 895582 3300.28 1119 1087 271.0
D 12 233 551845 2032.05 1119 1087 271.0
D 2 250 166527 610.4 1119 1087 271.0

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