ASTROSAT CZTI

Data Quality Report

Orbit 20191128_A07_049T01_9000003344_level2

Creation date: 2025-12-06T12:48:45.337388
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/AS1A07_049T01_9000003344cztM0_level2.fits modeM0/AS1A07_049T01_9000003344cztM0_level2_quad_clean.evt
Size (bytes)614,747,520472,138,560
Size586.3 MB 450.3 MB
Events in quadrant A3,834,6302,638,064
Events in quadrant B3,672,1322,644,081
Events in quadrant C3,715,7722,494,652
Events in quadrant D3,057,9902,184,807

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01303860
B01351030
C01308820
D01850770

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01050
B01050
C01050
D01050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012860
B012860
C012860
D012860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A632045210.824315%
B632049021.427125%
C632048311.314790%
D6320460439.561104%

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 73743 63194 0 0 0.00% 0.00%
B 73743 63192 0 0 0.00% 0.00%
C 73743 63191 0 0 0.00% 0.00%
D 73743 62021 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 3605 10.81 997 934 247.1
A 7 110 3064 8.62 997 934 247.1
A 9 19 2825 7.65 997 934 247.1
B 2 9 2994 10.81 970 926 191.2
B 2 8 2543 8.46 970 926 191.2
B 5 128 2452 7.98 970 926 191.2
C 12 241 2683 7.07 982 920 249.5
C 9 233 2501 6.34 982 920 249.5
C 9 209 2491 6.3 982 920 249.5
D 3 14 2246 6.21 872 794 233.7
D 13 238 2201 6.02 872 794 233.7
D 6 231 2165 5.87 872 794 233.7

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