ASTROSAT CZTI

Data Quality Report

Orbit 18729

Creation date: 2024-06-27T17:54:14.864434
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/AS1A05_226T06_9000002800_18729cztM0_level2.evt modeM0/AS1A05_226T06_9000002800_18729cztM0_level2_quad_clean.evt
Size (bytes)239,224,32047,796,480
Size228.1 MB 45.6 MB
Events in quadrant A1,706,042316,878
Events in quadrant B1,937,269315,882
Events in quadrant C1,754,522292,144
Events in quadrant D1,624,928291,532

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069420
B078320
C071460
D067020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A324230.092535%
B3243120.370028%
C3243200.616713%
D3243100.308356%

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 3242 3242 1 1 0.03% 0.03%
B 3243 3243 6 6 0.19% 0.19%
C 3243 3243 7 7 0.22% 0.22%
D 3243 3243 7 7 0.22% 0.22%

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 11 29 8377 89.62 438 431 88.7
A 9 143 5718 59.63 438 431 88.7
A 13 254 5237 54.2 438 431 88.7
B 10 245 245485 3051.35 429 420 80.3
B 12 111 9153 108.74 429 420 80.3
B 11 111 8153 96.28 429 420 80.3
C 14 238 65902 692.7 408 412 94.5
C 0 207 65158 684.83 408 412 94.5
C 3 233 31077 324.35 408 412 94.5
D 10 70 32456 314.94 419 408 101.8
D 2 234 14174 135.28 419 408 101.8
D 7 96 6908 63.88 419 408 101.8

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