ASTROSAT CZTI

Data Quality Report

Orbit 00901

Creation date: 2024-06-27T14:04:30.117613
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/AS1P01_161T05_9000000180_00901cztM0_level2.evt modeM0/AS1P01_161T05_9000000180_00901cztM0_level2_quad_clean.evt
Size (bytes)1,504,779,84076,305,600
Size1.4 GB 72.8 MB
Events in quadrant A9,568,672473,976
Events in quadrant B15,268,455381,913
Events in quadrant C10,958,023463,891
Events in quadrant D9,259,210443,458

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0339730
B0512450
C0381380
D0331300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7855220.280076%
B7855209326.645449%
C7855340.432845%
D78551972.507957%

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 7975 7857 403 403 5.05% 5.13%
B 7975 7857 3096 3096 38.82% 39.40%
C 7975 7857 682 682 8.55% 8.68%
D 7975 7857 519 519 6.51% 6.61%

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 15 127 100764 164.78 2460 2470 596.5
A 14 170 29928 46.03 2460 2470 596.5
A 11 79 10000 12.62 2460 2470 596.5
B 3 0 6693344 12908.09 2198 2216 518.4
B 0 220 59466 110.44 2198 2216 518.4
B 15 22 53417 98.77 2198 2216 518.4
C 9 83 1648818 2484.33 2365 2448 662.7
C 3 111 28411 39.18 2365 2448 662.7
C 15 241 22939 30.92 2365 2448 662.7
D 1 4 61669 82.39 2356 2371 719.7
D 12 188 61232 81.78 2356 2371 719.7
D 2 16 54669 72.67 2356 2371 719.7

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