ASTROSAT CZTI

Data Quality Report

Orbit 23791

Creation date: 2024-06-27T18:58:46.061752
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/AS1A07_113T01_9000003526_23791cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23791cztM0_level2_quad_clean.evt
Size (bytes)541,903,68078,684,480
Size516.8 MB 75.0 MB
Events in quadrant A3,169,912486,809
Events in quadrant B3,486,142495,915
Events in quadrant C3,210,645481,120
Events in quadrant D6,099,594460,555

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134971
B0143651
C0134951
D0227131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6567650.989797%
B65681342.040195%
C6567851.294351%
D65674346.608802%

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 7507 6567 0 0 0.00% 0.00%
B 7508 6568 64 64 0.85% 0.97%
C 7507 6567 0 0 0.00% 0.00%
D 7507 6567 372 372 4.96% 5.66%

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 13 254 11051 61.39 821 804 166.9
A 3 137 7101 37.73 821 804 166.9
A 0 226 6972 36.95 821 804 166.9
B 3 64 183810 1164.97 812 791 157.1
B 4 216 80711 508.72 812 791 157.1
B 12 111 18427 112.26 812 791 157.1
C 14 238 122112 654.18 786 792 185.5
C 3 233 12487 63.06 786 792 185.5
C 7 247 8360 40.81 786 792 185.5
D 8 195 2527991 13280.1 782 759 190.3
D 13 174 435901 2286.58 782 759 190.3
D 1 52 66207 343.92 782 759 190.3

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