ASTROSAT CZTI

Data Quality Report

Orbit 30493

Creation date: 2024-06-27T20:15:58.142496
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_058T04_9000004382_30493cztM0_level2.evt modeM0/AS1A10_058T04_9000004382_30493cztM0_level2_quad_clean.evt
Size (bytes)1,936,388,160198,714,240
Size1.8 GB 189.5 MB
Events in quadrant A8,568,5111,347,587
Events in quadrant B14,466,5591,336,722
Events in quadrant C9,009,9341,289,804
Events in quadrant D25,374,834789,250

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0372274
B0564504
C0380814
D0876864

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181681400.770586%
B181693581.970389%
C181692991.645660%
D18168822545.271907%

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 20693 18174 4 4 0.02% 0.02%
B 20694 18175 94 94 0.45% 0.52%
C 20694 18175 6 6 0.03% 0.03%
D 20693 18174 5702 5702 27.56% 31.37%

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 12 96 63196 139.12 2188 2145 438.8
A 8 192 54182 118.58 2188 2145 438.8
A 13 254 34693 74.17 2188 2145 438.8
B 6 159 5094857 12334.39 2161 2105 412.9
B 0 229 592445 1429.77 2161 2105 412.9
B 15 36 93944 222.43 2161 2105 412.9
C 3 233 396788 808.01 2081 2095 488.5
C 14 238 366503 746.01 2081 2095 488.5
C 0 10 54322 106.92 2081 2095 488.5
D 12 218 14218849 41602.27 1406 1369 341.7
D 12 250 1932122 5649.64 1406 1369 341.7
D 12 202 1211334 3540.52 1406 1369 341.7

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