ASTROSAT CZTI

Data Quality Report

Orbit 25807

Creation date: 2024-06-27T19:21:38.965000
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_068T01_9000003756_25807cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25807cztM0_level2_quad_clean.evt
Size (bytes)523,592,640104,230,080
Size499.3 MB 99.4 MB
Events in quadrant A4,868,292688,000
Events in quadrant B3,429,839710,660
Events in quadrant C3,440,399656,672
Events in quadrant D3,686,070656,482

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187130
B0142610
C0142830
D0151910

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63733755.884199%
B6373630.988545%
C63731181.851561%
D63731382.165385%

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 7643 6373 252 252 3.30% 3.95%
B 7643 6373 0 0 0.00% 0.00%
C 7643 6373 2 2 0.03% 0.03%
D 7643 6373 90 90 1.18% 1.41%

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 0 13 1408450 8252.18 858 845 170.6
A 11 29 156767 914.1 858 845 170.6
A 13 254 8888 47.15 858 845 170.6
B 0 190 26018 157.84 852 835 159.5
B 0 219 22554 136.13 852 835 159.5
B 15 33 22268 134.34 852 835 159.5
C 3 233 149655 803.7 804 809 185.2
C 14 238 130101 698.11 804 809 185.2
C 0 207 22856 119.04 804 809 185.2
D 7 80 314962 1599.06 820 801 196.5
D 1 52 204883 1038.76 820 801 196.5
D 8 195 42982 214.7 820 801 196.5

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