ASTROSAT CZTI

Data Quality Report

Orbit 27262

Creation date: 2024-06-27T19:38:11.904589
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/AS1T03_243T01_9000003918_27262cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27262cztM0_level2_quad_clean.evt
Size (bytes)138,421,44022,556,160
Size132.0 MB 21.5 MB
Events in quadrant A1,015,784135,403
Events in quadrant B1,008,467138,010
Events in quadrant C989,198131,248
Events in quadrant D1,036,539128,909

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044010
B043380
C042990
D045630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2053381.850950%
B2053492.386751%
C2052562.729045%
D2052251.218324%

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 2433 2054 1 1 0.04% 0.05%
B 2433 2054 0 0 0.00% 0.00%
C 2432 2053 0 0 0.00% 0.00%
D 2432 2053 5 5 0.21% 0.24%

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 96 26224 490.71 251 246 52.9
A 13 248 8465 155.25 251 246 52.9
A 8 192 7163 130.66 251 246 52.9
B 12 111 6253 116.02 254 247 51.8
B 11 111 5531 102.07 254 247 51.8
B 0 245 5084 93.44 254 247 51.8
C 14 238 37939 622.3 244 245 60.6
C 13 61 1579 22.02 244 245 60.6
C 4 224 924 11.21 244 245 60.6
D 2 250 50586 833.91 243 236 60.4
D 1 52 33263 547.0 243 236 60.4
D 7 96 11238 182.22 243 236 60.4

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