ASTROSAT CZTI

Data Quality Report

Orbit 14164

Creation date: 2024-06-27T16:51:16.680144
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/AS1G08_045T01_9000002092_14164cztM0_level2.evt modeM0/AS1G08_045T01_9000002092_14164cztM0_level2_quad_clean.evt
Size (bytes)1,517,958,720199,264,320
Size1.4 GB 190.0 MB
Events in quadrant A8,276,1531,260,172
Events in quadrant B17,450,2721,205,571
Events in quadrant C8,288,1021,226,691
Events in quadrant D10,804,1721,163,525

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03460
B03460
C03460
D03460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0358043
B0630733
C0353943
D0434613

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170941180.690301%
B17094377722.095472%
C170941000.585001%
D170943271.912952%

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 18430 17098 14 14 0.08% 0.08%
B 18430 17098 2506 2506 13.60% 14.66%
C 18430 17098 11 11 0.06% 0.06%
D 18430 17098 193 193 1.05% 1.13%

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 12 189 271721 642.02 2064 2018 420.1
A 15 69 26288 57.77 2064 2018 420.1
A 4 2 22979 49.9 2064 2018 420.1
B 0 85 9538956 26677.4 1887 1844 357.5
B 3 209 139356 384.65 1887 1844 357.5
B 4 48 138323 381.76 1887 1844 357.5
C 3 233 368368 787.16 2000 2011 465.4
C 0 207 98663 207.67 2000 2011 465.4
C 5 96 20619 39.98 2000 2011 465.4
D 8 195 1415602 3012.14 1980 1937 469.3
D 12 110 962086 2045.82 1980 1937 469.3
D 10 157 372270 789.08 1980 1937 469.3

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