ASTROSAT CZTI

Data Quality Report

Orbit 03852

Creation date: 2024-06-27T14:34:23.348347
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/AS1G05_189T01_9000000492_03852cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03852cztM0_level2_quad_clean.evt
Size (bytes)405,414,72058,533,120
Size386.6 MB 55.8 MB
Events in quadrant A3,080,268339,492
Events in quadrant B2,996,811341,653
Events in quadrant C2,806,697333,425
Events in quadrant D2,969,653321,985

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131942
B0128731
C0127891
D0134051

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62411141.826630%
B62411071.714469%
C6241741.185707%
D62411051.682423%

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 7206 6241 8 8 0.11% 0.13%
B 7206 6241 2 2 0.03% 0.03%
C 7206 6241 0 0 0.00% 0.00%
D 7206 6241 20 20 0.28% 0.32%

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 15 234 144100 953.07 741 725 150.4
A 8 15 44228 289.18 741 725 150.4
A 13 251 36560 238.21 741 725 150.4
B 15 204 79383 538.82 747 731 146.0
B 0 244 20341 134.34 747 731 146.0
B 12 111 13084 84.63 747 731 146.0
C 9 247 16978 97.41 711 714 167.0
C 2 53 8488 46.56 711 714 167.0
C 13 61 6207 32.9 711 714 167.0
D 2 32 98243 555.17 714 693 175.7
D 13 223 51756 290.6 714 693 175.7
D 13 248 50919 285.84 714 693 175.7

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
Veto Counter