ASTROSAT CZTI

Data Quality Report

Orbit 26834

Creation date: 2024-06-27T19:33:28.870362
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/AS1A09_145T01_9000003866_26834cztM0_level2.evt modeM0/AS1A09_145T01_9000003866_26834cztM0_level2_quad_clean.evt
Size (bytes)643,501,440116,064,000
Size613.7 MB 110.7 MB
Events in quadrant A4,147,108806,307
Events in quadrant B3,606,738834,460
Events in quadrant C3,323,985788,031
Events in quadrant D7,983,720645,438

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167000
B0147600
C0138420
D0279970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6313671.061302%
B63131081.710756%
C6313681.077142%
D6312161225.538657%

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 7563 6314 13 13 0.17% 0.21%
B 7563 6314 41 41 0.54% 0.65%
C 7563 6314 0 0 0.00% 0.00%
D 7562 6312 1519 1519 20.09% 24.07%

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 867229 5141.03 842 831 168.5
A 12 96 35377 204.99 842 831 168.5
A 13 254 11017 60.44 842 831 168.5
B 3 64 191074 1189.88 848 832 159.9
B 7 205 36205 221.24 848 832 159.9
B 10 246 24336 147.01 848 832 159.9
C 14 238 132335 690.27 814 822 190.5
C 15 208 12178 59.6 814 822 190.5
C 2 16 8862 42.2 814 822 190.5
D 1 52 3905922 22804.66 717 702 171.2
D 7 80 1084976 6331.65 717 702 171.2
D 2 250 249926 1455.35 717 702 171.2

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