ASTROSAT CZTI

Data Quality Report

Orbit 31500

Creation date: 2024-06-27T20:29:24.825728
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/AS1T04_030T01_9000004588_31500cztM0_level2.evt modeM0/AS1T04_030T01_9000004588_31500cztM0_level2_quad_clean.evt
Size (bytes)575,737,92072,892,800
Size549.1 MB 69.5 MB
Events in quadrant A3,556,530445,600
Events in quadrant B5,074,873453,470
Events in quadrant C4,088,174439,365
Events in quadrant D4,290,853429,215

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142701
B0194041
C0157601
D0166841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63012103.332804%
B63011542.444056%
C63012884.570703%
D63012343.713696%

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 7346 6301 98 98 1.33% 1.56%
B 7346 6301 12 12 0.16% 0.19%
C 7346 6301 83 83 1.13% 1.32%
D 7346 6301 151 151 2.06% 2.40%

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 0 13 461794 2888.55 801 784 159.6
A 13 254 11815 69.12 801 784 159.6
A 3 137 7970 45.03 801 784 159.6
B 6 159 1714423 11215.73 803 782 152.8
B 0 190 76948 498.5 803 782 152.8
B 4 80 31634 201.93 803 782 152.8
C 3 233 896130 4983.16 777 781 179.7
C 14 238 126727 700.97 777 781 179.7
C 2 114 14355 75.55 777 781 179.7
D 12 218 659417 3579.01 772 752 184.0
D 8 195 495207 2686.73 772 752 184.0
D 13 249 92842 500.39 772 752 184.0

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