ASTROSAT CZTI

Data Quality Report

Orbit 04691

Creation date: 2024-06-27T14:45:43.682582
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_235T01_9000000590_04691cztM0_level2.evt modeM0/AS1G05_235T01_9000000590_04691cztM0_level2_quad_clean.evt
Size (bytes)491,022,72083,456,640
Size468.3 MB 79.6 MB
Events in quadrant A3,159,807516,815
Events in quadrant B3,333,675526,254
Events in quadrant C3,051,199522,167
Events in quadrant D4,863,948487,853

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142063
B0146572
C0139592
D0193732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6803230.338086%
B6803390.573276%
C6803220.323387%
D68033334.894899%

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 7993 6805 1 1 0.01% 0.01%
B 7993 6805 5 5 0.06% 0.07%
C 7993 6805 0 0 0.00% 0.00%
D 7993 6805 284 284 3.55% 4.17%

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 13 251 73092 458.05 775 758 157.9
A 15 174 65402 409.35 775 758 157.9
A 8 15 11433 67.6 775 758 157.9
B 15 204 113732 748.06 793 774 151.0
B 14 167 63239 413.67 793 774 151.0
B 4 80 41047 266.71 793 774 151.0
C 14 48 25429 136.74 774 778 180.3
C 13 61 6355 30.94 774 778 180.3
C 12 4 3586 15.58 774 778 180.3
D 13 235 1142911 6331.34 747 725 180.4
D 2 63 621388 3440.44 747 725 180.4
D 2 234 80872 444.27 747 725 180.4

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