ASTROSAT CZTI

Data Quality Report

Orbit 02147

Creation date: 2024-06-27T14:14:36.161181
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/AS1T01_072T02_9000000336_02147cztM0_level2.evt modeM0/AS1T01_072T02_9000000336_02147cztM0_level2_quad_clean.evt
Size (bytes)559,224,00090,014,400
Size533.3 MB 85.8 MB
Events in quadrant A5,592,552537,589
Events in quadrant B3,756,499550,690
Events in quadrant C3,591,296532,848
Events in quadrant D3,429,385525,664

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231492
B0175182
C0173436
D0172972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B010
C010
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83386848.203406%
B83381271.523147%
C8336460.551823%
D8338160.191893%

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 8633 8340 330 330 3.82% 3.96%
B 8633 8340 4 4 0.05% 0.05%
C 8633 8339 0 0 0.00% 0.00%
D 8633 8340 4 4 0.05% 0.05%

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 15 171 2160826 12237.1 892 873 176.5
A 0 1 6234 30.37 892 873 176.5
A 10 2 2110 7.01 892 873 176.5
B 5 68 80429 450.16 956 934 176.6
B 0 220 14476 76.69 956 934 176.6
B 0 234 11570 60.23 956 934 176.6
C 10 82 17317 82.3 908 912 199.3
C 12 4 9967 45.43 908 912 199.3
C 1 192 4779 19.4 908 912 199.3
D 13 53 29591 141.46 894 871 203.0
D 10 199 15902 74.04 894 871 203.0
D 5 233 8690 38.51 894 871 203.0

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