ASTROSAT CZTI

Data Quality Report

Orbit 20063

Creation date: 2024-06-27T18:10:47.133905
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/AS1T03_117T01_9000002988_20063cztM0_level2.evt modeM0/AS1T03_117T01_9000002988_20063cztM0_level2_quad_clean.evt
Size (bytes)319,406,40068,333,760
Size304.6 MB 65.2 MB
Events in quadrant A2,334,788450,380
Events in quadrant B2,315,876451,648
Events in quadrant C2,301,152428,111
Events in quadrant D2,421,578429,634

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096341
B095031
C093751
D0100201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4398150.341064%
B4398220.500227%
C4398340.773079%
D4398150.341064%

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 4398 4398 6 6 0.14% 0.14%
B 4398 4398 8 8 0.18% 0.18%
C 4398 4398 0 0 0.00% 0.00%
D 4398 4398 7 7 0.16% 0.16%

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 14 254 46716 393.05 587 578 117.4
A 14 238 26598 221.67 587 578 117.4
A 0 226 4969 37.41 587 578 117.4
B 4 80 36151 321.74 583 571 110.6
B 12 111 12703 109.71 583 571 110.6
B 11 111 11417 98.08 583 571 110.6
C 14 238 91413 692.22 565 573 131.2
C 13 61 3918 25.49 565 573 131.2
C 4 254 3357 21.21 565 573 131.2
D 2 184 158799 1155.08 574 560 137.0
D 1 52 80157 581.03 574 560 137.0
D 2 234 15995 112.67 574 560 137.0

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