ASTROSAT CZTI

Data Quality Report

Orbit 45975

Creation date: 2024-06-27T23:18:23.669328
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/AS1A13_017T01_9000006148_45975cztM0_level2.fits modeM0/AS1A13_017T01_9000006148_45975cztM0_level2_quad_clean.evt
Size (bytes)744,851,520148,835,520
Size710.3 MB 141.9 MB
Events in quadrant A9,680,172919,174
Events in quadrant B6,853,1731,005,545
Events in quadrant C4,368,7221,004,109
Events in quadrant D5,912,978900,709

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0352861
B0267911
C0202241
D0245501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9768121112.397625%
B97686036.173219%
C97681641.678952%
D97674714.822361%

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 10118 9768 387 387 3.82% 3.96%
B 10118 9768 121 121 1.20% 1.24%
C 10118 9768 0 0 0.00% 0.00%
D 10117 9767 310 310 3.06% 3.17%

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 10 83 3545786 16250.81 1048 1022 218.1
A 15 223 2048846 9388.16 1048 1022 218.1
A 12 189 20549 89.52 1048 1022 218.1
B 3 112 2426205 11261.2 1087 1051 215.4
B 5 255 93803 430.69 1087 1051 215.4
B 12 111 28554 127.71 1087 1051 215.4
C 9 54 83991 325.74 1091 1091 254.5
C 3 233 18728 69.3 1091 1091 254.5
C 5 250 8376 28.63 1091 1091 254.5
D 1 52 844970 3120.96 1080 1043 270.4
D 12 2 422773 1559.61 1080 1043 270.4
D 13 249 277437 1022.14 1080 1043 270.4

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