ASTROSAT CZTI

Data Quality Report

Orbit 02476

Creation date: 2024-06-27T14:18:19.262325
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/AS1G02_018T06_9000000370_02476cztM0_level2.evt modeM0/AS1G02_018T06_9000000370_02476cztM0_level2_quad_clean.evt
Size (bytes)460,025,28072,933,120
Size438.7 MB 69.6 MB
Events in quadrant A3,120,421438,985
Events in quadrant B3,201,362455,266
Events in quadrant C3,105,126451,134
Events in quadrant D4,068,026414,522

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134213
B0135352
C0134692
D0164112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64261412.194211%
B64261522.365391%
C64261412.194211%
D64264236.582633%

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 8901 6429 0 0 0.00% 0.00%
B 8901 6429 0 0 0.00% 0.00%
C 8901 6429 0 0 0.00% 0.00%
D 8901 6429 271 271 3.04% 4.22%

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 8 15 24126 144.03 801 784 162.1
A 14 63 10464 59.73 801 784 162.1
A 12 194 9091 51.26 801 784 162.1
B 4 48 33962 211.09 816 796 157.1
B 4 200 16003 96.79 816 796 157.1
B 12 111 11471 67.94 816 796 157.1
C 10 65 14439 73.43 789 792 185.9
C 13 61 7210 34.53 789 792 185.9
C 12 4 4457 19.72 789 792 185.9
D 12 33 745106 4069.95 767 750 182.9
D 12 1 261472 1425.56 767 750 182.9
D 7 67 94084 510.33 767 750 182.9

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