ASTROSAT CZTI

Data Quality Report

Orbit 13768

Creation date: 2024-06-27T16:45:50.623418
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_062T01_9000002038_13768cztM0_level2.evt modeM0/AS1G08_062T01_9000002038_13768cztM0_level2_quad_clean.evt
Size (bytes)518,558,40094,501,440
Size494.5 MB 90.1 MB
Events in quadrant A3,400,530593,835
Events in quadrant B3,228,571593,850
Events in quadrant C3,856,359621,134
Events in quadrant D4,768,743589,983

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144162
B0139171
C0157411
D0187621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66421602.408913%
B6642831.249624%
C66421962.950918%
D6642931.400181%

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 7213 6644 61 61 0.85% 0.92%
B 7213 6644 9 9 0.12% 0.14%
C 7213 6644 132 132 1.83% 1.99%
D 7213 6644 37 37 0.51% 0.56%

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 9 143 263281 1602.04 801 785 163.9
A 15 69 19771 115.87 801 785 163.9
A 1 162 17902 104.47 801 785 163.9
B 0 219 48750 313.28 797 776 153.1
B 4 80 38949 249.28 797 776 153.1
B 3 209 21421 134.82 797 776 153.1
C 9 236 749628 4116.84 777 781 181.9
C 3 233 78006 424.55 777 781 181.9
C 13 61 5724 27.17 777 781 181.9
D 1 52 1346658 7040.92 780 757 191.2
D 5 222 201885 1052.18 780 757 191.2
D 10 157 147595 768.17 780 757 191.2

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