ASTROSAT CZTI

Data Quality Report

Orbit 23246

Creation date: 2024-06-27T18:51:47.321298
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/AS1A08_004T03_9000003438_23246cztM0_level2.evt modeM0/AS1A08_004T03_9000003438_23246cztM0_level2_quad_clean.evt
Size (bytes)474,462,72098,444,160
Size452.5 MB 93.9 MB
Events in quadrant A3,329,908655,425
Events in quadrant B3,399,301665,432
Events in quadrant C3,413,373615,408
Events in quadrant D3,798,149604,877

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137432
B0139202
C0138872
D0151943

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6317871.377236%
B63171091.725503%
C63171592.517018%
D63161382.184927%

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 7637 6317 0 0 0.00% 0.00%
B 7637 6317 5 5 0.07% 0.08%
C 7637 6317 14 14 0.18% 0.22%
D 7636 6316 58 58 0.76% 0.92%

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 6 16 31453 179.38 856 841 170.7
A 13 254 8677 45.92 856 841 170.7
A 0 226 7676 40.05 856 841 170.7
B 3 64 39954 246.07 849 832 159.0
B 0 190 19128 115.08 849 832 159.0
B 12 111 17917 107.46 849 832 159.0
C 14 238 128038 680.08 806 813 187.1
C 0 10 101685 539.21 806 813 187.1
C 0 239 19468 99.72 806 813 187.1
D 1 52 382734 1904.51 826 805 200.5
D 7 238 173170 859.51 826 805 200.5
D 12 233 33685 163.96 826 805 200.5

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