ASTROSAT CZTI

Data Quality Report

Orbit 07630

Creation date: 2024-06-27T15:22:08.674779
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/AS1T01_157T01_9000001050_07630cztM0_level2.evt modeM0/AS1T01_157T01_9000001050_07630cztM0_level2_quad_clean.evt
Size (bytes)808,928,64054,627,840
Size771.5 MB 52.1 MB
Events in quadrant A3,707,263324,871
Events in quadrant B3,614,573328,149
Events in quadrant C12,412,383226,731
Events in quadrant D4,289,516284,195

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154060
B0151050
C0417390
D0173620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70431211.718018%
B70431301.845804%
C7043282140.053954%
D70432884.089167%

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 7883 7044 0 0 0.00% 0.00%
B 7883 7044 3 3 0.04% 0.04%
C 7883 7044 2667 2667 33.83% 37.86%
D 7883 7044 198 198 2.51% 2.81%

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 13 251 345110 1969.02 866 846 174.8
A 3 1 13761 73.87 866 846 174.8
A 0 128 13548 72.65 866 846 174.8
B 0 229 91200 545.81 867 846 165.5
B 0 219 53769 319.7 867 846 165.5
B 0 214 29933 175.71 867 846 165.5
C 9 68 7620128 43557.93 758 762 174.9
C 9 243 817637 4669.86 758 762 174.9
C 4 254 789914 4511.38 758 762 174.9
D 12 233 497690 2430.3 834 809 204.5
D 13 104 153248 745.6 834 809 204.5
D 2 14 129506 629.47 834 809 204.5

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