ASTROSAT CZTI

Data Quality Report

Orbit 20161114_G06_019T01_9000000796_level2

Creation date: 2025-11-07T18:39:25.127545
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/AS1G06_019T01_9000000796cztM0_level2.fits modeM0/AS1G06_019T01_9000000796cztM0_level2_quad_clean.evt
Size (bytes)592,367,040575,159,040
Size564.9 MB 548.5 MB
Events in quadrant A3,531,4073,354,837
Events in quadrant B3,417,2683,332,054
Events in quadrant C3,517,5023,285,482
Events in quadrant D3,062,3863,038,252

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01030
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01592170
B01516330
C01324450
D01382920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013220
B013120
C013380
D013180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6424820203.144067%
B6401826994.216002%
C642775500.855672%
D642718931.389429%

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 79498 65713 0 0 0.00% 0.00%
B 79498 65609 0 0 0.00% 0.00%
C 79498 65817 0 0 0.00% 0.00%
D 79498 65692 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 0 29 3377 10.58 918 852 238.8
A 7 110 3027 9.11 918 852 238.8
A 0 30 2610 7.36 918 852 238.8
B 2 9 3004 11.64 901 854 184.7
B 12 226 2362 8.16 901 854 184.7
B 14 254 2311 7.89 901 854 184.7
C 1 81 2553 6.78 930 856 250.3
C 1 80 2518 6.64 930 856 250.3
C 9 233 2406 6.19 930 856 250.3
D 3 14 2387 6.72 872 787 238.1
D 6 231 2215 6.0 872 787 238.1
D 1 3 2188 5.88 872 787 238.1

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