ASTROSAT CZTI

Data Quality Report

Orbit 12537

Creation date: 2024-06-27T16:28:51.056673
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_130T01_9000001856_12537cztM0_level2.evt modeM0/AS1A04_130T01_9000001856_12537cztM0_level2_quad_clean.evt
Size (bytes)514,664,64072,728,640
Size490.8 MB 69.4 MB
Events in quadrant A3,787,410433,481
Events in quadrant B3,779,553432,974
Events in quadrant C3,340,235433,902
Events in quadrant D4,199,441409,229

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156023
B0156862
C0146652
D0174752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70751271.795053%
B70751732.445230%
C7075600.848057%
D70752703.816254%

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 9161 7078 0 0 0.00% 0.00%
B 9161 7078 20 20 0.22% 0.28%
C 9161 7079 0 0 0.00% 0.00%
D 9161 7078 162 162 1.77% 2.29%

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 156259 875.09 871 852 177.6
A 1 178 90101 502.56 871 852 177.6
A 1 161 75420 419.89 871 852 177.6
B 4 239 255302 1517.81 873 851 167.6
B 0 230 41973 245.29 873 851 167.6
B 0 214 27896 161.32 873 851 167.6
C 3 0 7814 34.88 854 861 199.4
C 13 61 6417 27.87 854 861 199.4
C 8 222 2165 6.54 854 861 199.4
D 1 52 868971 4315.84 839 818 201.2
D 8 195 45029 219.79 839 818 201.2
D 13 104 33494 162.44 839 818 201.2

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