ASTROSAT CZTI

Data Quality Report

Orbit 20171008_G08_030T01_9000001592_level2

Creation date: 2025-11-17T14:51:56.344029
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/AS1G08_030T01_9000001592cztM0_level2.fits modeM0/AS1G08_030T01_9000001592cztM0_level2_quad_clean.evt
Size (bytes)184,285,440148,602,240
Size175.7 MB 141.7 MB
Events in quadrant A1,099,414762,877
Events in quadrant B1,101,142863,753
Events in quadrant C1,122,088834,858
Events in quadrant D972,122752,333

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0587770
B0468230
C0383380
D0449140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18652204910.985417%
B186527554.047823%
C18652850.455715%
D186522861.533348%

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 23337 18643 0 0 0.00% 0.00%
B 23337 18648 0 0 0.00% 0.00%
C 23337 18652 0 0 0.00% 0.00%
D 23337 18652 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 1082 11.36 286 269 71.5
A 0 30 857 8.22 286 269 71.5
A 7 110 817 7.66 286 269 71.5
B 2 9 911 10.57 290 277 60.0
B 5 128 765 8.14 290 277 60.0
B 3 17 734 7.62 290 277 60.0
C 1 81 832 7.07 296 275 78.8
C 1 80 806 6.74 296 275 78.8
C 7 111 770 6.28 296 275 78.8
D 3 14 687 5.73 277 253 75.8
D 7 3 685 5.7 277 253 75.8
D 6 231 685 5.7 277 253 75.8

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