ASTROSAT CZTI

Data Quality Report

Orbit 31509

Creation date: 2024-06-27T20:29:18.165118
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_119T01_9000004590_31509cztM0_level2.evt modeM0/AS1A10_119T01_9000004590_31509cztM0_level2_quad_clean.evt
Size (bytes)562,135,68092,344,320
Size536.1 MB 88.1 MB
Events in quadrant A3,716,917600,328
Events in quadrant B5,453,527601,515
Events in quadrant C3,480,737582,492
Events in quadrant D3,932,409557,970

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152672
B0208252
C0146122
D0160222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65091582.427408%
B65091712.627132%
C6509831.275157%
D65091542.365955%

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 7599 6509 117 117 1.54% 1.80%
B 7599 6510 74 74 0.97% 1.14%
C 7599 6510 3 3 0.04% 0.05%
D 7599 6510 121 121 1.59% 1.86%

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 13 581723 3585.09 810 795 162.0
A 13 254 12212 70.46 810 795 162.0
A 3 137 7999 44.46 810 795 162.0
B 6 159 1880059 12186.73 807 789 154.2
B 5 172 274129 1772.56 807 789 154.2
B 0 245 41845 266.24 807 789 154.2
C 3 233 210371 1151.66 776 782 182.0
C 14 238 124731 681.08 776 782 182.0
C 12 249 28569 152.68 776 782 182.0
D 13 249 355696 1921.6 774 756 184.7
D 8 195 286798 1548.59 774 756 184.7
D 12 233 172129 927.79 774 756 184.7

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