ASTROSAT CZTI

Data Quality Report

Orbit 19531

Creation date: 2024-06-27T18:03:56.935701
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_108T01_9000002898_19531cztM0_level2.evt modeM0/AS1T03_108T01_9000002898_19531cztM0_level2_quad_clean.evt
Size (bytes)222,724,80022,129,920
Size212.4 MB 21.1 MB
Events in quadrant A1,455,530118,500
Events in quadrant B1,553,280118,210
Events in quadrant C1,638,594114,880
Events in quadrant D1,900,605112,399

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061211
B063801
C067261
D074771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2875903.130435%
B28761164.033380%
C28761404.867872%
D28761525.285118%

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 3230 2876 0 0 0.00% 0.00%
B 3231 2877 6 6 0.19% 0.21%
C 3231 2876 0 0 0.00% 0.00%
D 3231 2877 54 54 1.67% 1.88%

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 3921 45.09 375 367 78.8
A 12 194 3490 39.62 375 367 78.8
A 13 254 3404 38.53 375 367 78.8
B 7 220 24609 325.82 372 363 74.4
B 3 64 18325 241.38 372 363 74.4
B 0 244 17774 233.97 372 363 74.4
C 3 233 185754 2178.11 355 356 85.1
C 14 238 55759 650.89 355 356 85.1
C 8 128 5686 62.62 355 356 85.1
D 12 218 197221 2171.57 363 352 90.7
D 12 233 178319 1963.07 363 352 90.7
D 1 52 71167 781.13 363 352 90.7

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