ASTROSAT CZTI

Data Quality Report

Orbit 07973

Creation date: 2024-06-27T15:26:13.847370
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/AS1G06_077T01_9000001090_07973cztM0_level2.evt modeM0/AS1G06_077T01_9000001090_07973cztM0_level2_quad_clean.evt
Size (bytes)574,260,480103,118,400
Size547.7 MB 98.3 MB
Events in quadrant A4,310,468649,688
Events in quadrant B3,620,104692,509
Events in quadrant C3,519,561691,042
Events in quadrant D5,460,262595,420

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175013
B0154742
C0152112
D0212422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71003615.084507%
B71001021.436620%
C7100610.859155%
D710083611.774648%

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 9530 7102 262 262 2.75% 3.69%
B 9530 7102 9 9 0.09% 0.13%
C 9530 7102 0 0 0.00% 0.00%
D 9530 7102 659 659 6.92% 9.28%

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 0 254 866028 4913.28 874 858 176.1
A 0 128 30095 166.03 874 858 176.1
A 15 234 22197 121.18 874 858 176.1
B 4 239 84206 490.87 900 878 169.8
B 12 111 18363 103.0 900 878 169.8
B 11 51 17134 95.76 900 878 169.8
C 1 16 59112 287.77 883 889 202.3
C 8 208 8195 36.11 883 889 202.3
C 13 61 6713 28.79 883 889 202.3
D 1 52 2225542 11216.64 812 791 198.3
D 2 14 71839 358.21 812 791 198.3
D 1 20 45338 224.59 812 791 198.3

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