ASTROSAT CZTI

Data Quality Report

Orbit 11804

Creation date: 2024-06-27T16:18:31.348399
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/AS1A04_022T04_9000001746_11804cztM0_level2.evt modeM0/AS1A04_022T04_9000001746_11804cztM0_level2_quad_clean.evt
Size (bytes)328,374,72049,268,160
Size313.2 MB 47.0 MB
Events in quadrant A2,190,557298,286
Events in quadrant B2,660,355296,863
Events in quadrant C2,003,009303,288
Events in quadrant D2,790,115282,793

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093992
B0107111
C090161
D0112011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4409651.474257%
B44091383.129961%
C4409370.839193%
D44092265.125879%

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 5085 4411 1 1 0.02% 0.02%
B 5085 4411 44 44 0.87% 1.00%
C 5085 4411 0 0 0.00% 0.00%
D 5085 4411 157 157 3.09% 3.56%

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 1 162 64577 590.54 524 513 108.5
A 1 178 34814 316.18 524 513 108.5
A 1 161 29447 266.71 524 513 108.5
B 4 239 304576 2994.02 522 507 101.6
B 10 16 109819 1076.34 522 507 101.6
B 15 185 92426 905.08 522 507 101.6
C 13 61 3849 27.35 512 515 121.9
C 1 16 2719 18.08 512 515 121.9
C 8 208 2381 15.31 512 515 121.9
D 1 52 523607 4287.03 500 486 122.0
D 9 85 154458 1261.82 500 486 122.0
D 2 136 50244 407.77 500 486 122.0

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