ASTROSAT CZTI

Data Quality Report

Orbit 20230429_A12_042T01_9000005588_level2

Creation date: 2023-04-29T22:56:19.246665
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/AS1A12_042T01_9000005588cztM0_level2.fits modeM0/AS1A12_042T01_9000005588cztM0_level2_quad_clean.evt
Size (bytes)222,382,080302,978,880
Size212.1 MB 288.9 MB
Events in quadrant A1,336,9181,964,182
Events in quadrant B1,278,7321,974,064
Events in quadrant C1,298,2101,849,977
Events in quadrant D1,128,0001,694,863

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05060
B05060
C05060
D05060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0529840
B0506220
C0532510
D0570690

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24609360.146288%
B24609580.235686%
C24609810.329148%
D246094101.666057%

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 33482 24606 0 0 0.00% 0.00%
B 33483 24607 0 0 0.00% 0.00%
C 33482 24606 0 0 0.00% 0.00%
D 33483 24600 0 0 0.00% 0.00%

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 7 110 1106 8.89 348 328 87.5
A 9 19 1087 8.67 348 328 87.5
A 0 29 1068 8.45 348 328 87.5
B 2 9 1084 11.33 338 323 67.2
B 3 80 901 8.6 338 323 67.2
B 3 17 896 8.53 338 323 67.2
C 1 81 1080 8.52 342 321 89.1
C 1 80 1052 8.21 342 321 89.1
C 1 65 908 6.59 342 321 89.1
D 6 62 848 6.4 322 295 86.4
D 7 3 829 6.18 322 295 86.4
D 10 189 826 6.15 322 295 86.4

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