ASTROSAT CZTI

Data Quality Report

Orbit 29894

Creation date: 2024-06-27T20:08:50.610720
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/AS1A10_102T12_9000004284_29894cztM0_level2.evt modeM0/AS1A10_102T12_9000004284_29894cztM0_level2_quad_clean.evt
Size (bytes)709,090,560101,453,760
Size676.2 MB 96.8 MB
Events in quadrant A3,535,483672,941
Events in quadrant B5,567,557674,268
Events in quadrant C5,499,120638,036
Events in quadrant D6,395,189594,605

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148382
B0213562
C0213822
D0238662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7073721.017956%
B70731201.696593%
C707482411.648290%
D707395313.473774%

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 8823 7075 3 3 0.03% 0.04%
B 8823 7075 0 0 0.00% 0.00%
C 8824 7076 44 44 0.50% 0.62%
D 8823 7075 723 723 8.19% 10.22%

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 8 192 32321 172.28 904 887 182.5
A 13 254 12625 64.33 904 887 182.5
A 3 137 9183 45.47 904 887 182.5
B 6 159 2047370 11828.2 895 872 173.0
B 12 111 21497 119.21 895 872 173.0
B 11 111 19717 108.92 895 872 173.0
C 3 233 1308496 6606.18 846 853 197.9
C 10 22 394706 1989.74 846 853 197.9
C 14 238 272352 1371.61 846 853 197.9
D 12 2 1816392 9125.69 835 814 199.0
D 7 238 507917 2548.87 835 814 199.0
D 7 80 397516 1993.95 835 814 199.0

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