ASTROSAT CZTI

Data Quality Report

Orbit 12148

Creation date: 2024-06-27T16:23:04.050632
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/AS1G08_065T01_9000001796_12148cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12148cztM0_level2_quad_clean.evt
Size (bytes)681,096,960112,348,800
Size649.5 MB 107.1 MB
Events in quadrant A4,239,560732,559
Events in quadrant B5,806,119718,620
Events in quadrant C3,769,382722,291
Events in quadrant D6,265,247667,409

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182763
B0228392
C0169082
D0243842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80721752.167988%
B80726457.990585%
C8072690.854807%
D80726868.498513%

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 8663 8075 37 37 0.43% 0.46%
B 8663 8075 277 277 3.20% 3.43%
C 8663 8075 2 2 0.02% 0.02%
D 8663 8075 441 441 5.09% 5.46%

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 13 248 169696 845.58 981 958 199.6
A 1 162 85003 421.17 981 958 199.6
A 8 15 67682 334.37 981 958 199.6
B 4 239 826233 4519.11 959 935 182.6
B 3 64 795617 4351.46 959 935 182.6
B 11 51 125475 681.95 959 935 182.6
C 8 128 9979 40.67 957 958 221.8
C 13 61 7255 28.39 957 958 221.8
C 8 112 6239 23.81 957 958 221.8
D 10 157 1259543 5605.82 926 895 224.5
D 14 34 461636 2052.07 926 895 224.5
D 8 195 439310 1952.63 926 895 224.5

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