ASTROSAT CZTI

Data Quality Report

Orbit 38122

Creation date: 2024-06-27T21:48:40.495551
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_065T21_9000005364_38122cztM0_level2.fits modeM0/AS1A11_065T21_9000005364_38122cztM0_level2_quad_clean.evt
Size (bytes)658,667,520176,526,720
Size628.2 MB 168.3 MB
Events in quadrant A6,350,4461,190,837
Events in quadrant B5,451,5191,199,341
Events in quadrant C5,353,6821,154,227
Events in quadrant D6,397,1241,060,128

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254373
B0232585
C02216210
D0260259

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10693840.785561%
B106911571.468525%
C10688290.271332%
D10689830.776499%

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 13469 10695 61 61 0.45% 0.57%
B 13469 10694 121 121 0.90% 1.13%
C 13469 10693 17 17 0.13% 0.16%
D 13469 10693 69 69 0.51% 0.65%

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 759726 3102.53 1213 1189 244.5
A 10 83 640210 2613.69 1213 1189 244.5
A 12 194 123055 498.45 1213 1189 244.5
B 5 172 352284 1517.88 1197 1163 231.3
B 0 229 322578 1389.46 1197 1163 231.3
B 12 111 29425 122.17 1197 1163 231.3
C 15 214 441700 1604.86 1180 1187 274.5
C 5 250 139823 505.07 1180 1187 274.5
C 3 233 88524 318.18 1180 1187 274.5
D 12 235 537397 1879.39 1178 1148 285.3
D 1 52 349876 1222.19 1178 1148 285.3
D 7 223 233870 815.62 1178 1148 285.3

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