ASTROSAT CZTI

Data Quality Report

Orbit 38804

Creation date: 2024-06-27T21:56:38.759192
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/AS1A12_025T11_9000005398_38804cztM0_level2.fits modeM0/AS1A12_025T11_9000005398_38804cztM0_level2_quad_clean.evt
Size (bytes)174,925,44040,890,240
Size166.8 MB 39.0 MB
Events in quadrant A1,423,978274,142
Events in quadrant B1,461,702276,020
Events in quadrant C1,272,541266,812
Events in quadrant D2,121,858242,794

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057411
B060171
C052761
D080481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2483100.402739%
B2483692.778896%
C248390.362465%
D2483883.544100%

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 2483 2483 5 5 0.20% 0.20%
B 2483 2483 19 19 0.77% 0.77%
C 2483 2483 3 3 0.12% 0.12%
D 2483 2483 59 59 2.38% 2.38%

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 10 83 211018 3548.65 283 276 59.4
A 13 248 90103 1512.58 283 276 59.4
A 9 143 14740 243.56 283 276 59.4
B 5 184 218914 3907.17 279 271 56.0
B 0 230 66112 1176.59 279 271 56.0
B 15 85 37070 657.6 279 271 56.0
C 15 214 108953 1634.4 277 278 66.5
C 1 23 70162 1051.01 277 278 66.5
C 0 10 7527 109.02 277 278 66.5
D 2 16 315747 4586.61 274 266 68.8
D 12 235 312775 4543.4 274 266 68.8
D 10 118 160433 2328.58 274 266 68.8

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