ASTROSAT CZTI

Data Quality Report

Orbit 29879

Creation date: 2024-06-27T20:08:36.794227
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/AS1A10_102T10_9000004282_29879cztM0_level2.evt modeM0/AS1A10_102T10_9000004282_29879cztM0_level2_quad_clean.evt
Size (bytes)655,349,760105,730,560
Size625.0 MB 100.8 MB
Events in quadrant A3,370,776708,292
Events in quadrant B5,366,353702,328
Events in quadrant C6,390,407651,335
Events in quadrant D4,257,643663,172

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143822
B0207043
C0239562
D0171142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6841630.920918%
B68401301.900585%
C68404476.535088%
D68401301.900585%

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 7686 6842 1 1 0.01% 0.01%
B 7685 6841 0 0 0.00% 0.00%
C 7685 6841 41 41 0.53% 0.60%
D 7685 6841 89 89 1.16% 1.30%

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 8 192 29941 169.22 862 846 171.9
A 13 254 12666 68.74 862 846 171.9
A 3 137 8260 43.12 862 846 171.9
B 6 159 2034695 12765.82 848 827 159.3
B 12 111 19226 115.48 848 827 159.3
B 11 111 17544 104.93 848 827 159.3
C 3 233 3048098 15999.29 817 823 190.5
C 14 238 134466 701.67 817 823 190.5
C 2 114 16114 80.28 817 823 190.5
D 8 195 395903 2005.33 838 817 197.0
D 7 80 343754 1740.64 838 817 197.0
D 7 238 111568 562.14 838 817 197.0

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