ASTROSAT CZTI

Data Quality Report

Orbit 27159

Creation date: 2024-06-27T19:37:07.874144
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_245T01_9000003916_27159cztM0_level2.evt modeM0/AS1T03_245T01_9000003916_27159cztM0_level2_quad_clean.evt
Size (bytes)598,538,88089,510,400
Size570.8 MB 85.4 MB
Events in quadrant A4,227,337549,339
Events in quadrant B4,242,457559,037
Events in quadrant C3,801,379540,495
Events in quadrant D5,323,495515,522

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176400
B0175590
C0163460
D0212350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78441792.281999%
B78442022.575217%
C78452142.727852%
D78453584.563416%

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 8609 7848 32 32 0.37% 0.41%
B 8609 7848 2 2 0.02% 0.03%
C 8610 7849 0 0 0.00% 0.00%
D 8610 7849 205 205 2.38% 2.61%

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 15 174 225667 1139.41 975 956 197.2
A 0 13 136286 686.2 975 956 197.2
A 12 189 60793 303.41 975 956 197.2
B 15 33 114190 597.37 975 949 189.6
B 3 112 92375 482.29 975 949 189.6
B 0 190 60711 315.26 975 949 189.6
C 14 238 147615 659.83 935 941 222.3
C 13 61 6590 25.41 935 941 222.3
C 3 233 3749 12.63 935 941 222.3
D 12 233 757021 3078.78 925 904 245.6
D 1 52 623000 2533.07 925 904 245.6
D 2 250 194195 787.05 925 904 245.6

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