ASTROSAT CZTI

Data Quality Report

Orbit 26361

Creation date: 2024-06-27T19:28:10.309843
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/AS1A09_008T02_9000003810_26361cztM0_level2.evt modeM0/AS1A09_008T02_9000003810_26361cztM0_level2_quad_clean.evt
Size (bytes)317,727,36075,124,800
Size303.0 MB 71.6 MB
Events in quadrant A1,871,172505,193
Events in quadrant B1,806,837525,917
Events in quadrant C2,312,072499,013
Events in quadrant D3,367,774471,184

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081990
B079140
C092140
D0126380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3873360.929512%
B3873140.361477%
C38731533.950426%
D387446311.951471%

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 5173 3874 18 18 0.35% 0.46%
B 5173 3874 1 1 0.02% 0.03%
C 5173 3874 79 79 1.53% 2.04%
D 5174 3875 399 399 7.71% 10.30%

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 0 13 111757 1215.93 455 446 91.5
A 13 254 5580 56.08 455 446 91.5
A 3 137 4132 40.26 455 446 91.5
B 12 111 9889 108.98 459 448 86.6
B 11 111 9034 99.11 459 448 86.6
B 14 111 8532 93.32 459 448 86.6
C 3 233 465229 4454.86 447 451 104.3
C 14 238 72333 688.98 447 451 104.3
C 4 254 24205 227.68 447 451 104.3
D 7 80 1007787 9777.2 434 424 103.0
D 1 52 643918 6245.58 434 424 103.0
D 11 176 48204 463.74 434 424 103.0

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