ASTROSAT CZTI

Data Quality Report

Orbit 28894

Creation date: 2024-06-27T19:57:42.166268
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_064T01_9000004144_28894cztM0_level2.evt modeM0/AS1A10_064T01_9000004144_28894cztM0_level2_quad_clean.evt
Size (bytes)623,793,60077,670,720
Size594.9 MB 74.1 MB
Events in quadrant A3,016,993505,718
Events in quadrant B3,067,620516,028
Events in quadrant C6,911,339450,334
Events in quadrant D5,483,006453,203

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126101
B0127201
C0246871
D0205021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6103631.032279%
B6104941.539974%
C6104118119.347969%
D61044307.044561%

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 7183 6103 0 0 0.00% 0.00%
B 7184 6104 0 0 0.00% 0.00%
C 7183 6103 554 554 7.71% 9.08%
D 7184 6104 383 383 5.33% 6.27%

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 13 254 9491 55.9 780 765 156.1
A 3 137 7546 43.44 780 765 156.1
A 0 226 6516 36.84 780 765 156.1
B 12 111 17899 115.91 776 756 147.9
B 11 111 16593 107.08 776 756 147.9
B 14 111 15063 96.73 776 756 147.9
C 3 233 3931202 23962.21 709 716 164.0
C 14 238 135498 821.7 709 716 164.0
C 15 208 33034 197.03 709 716 164.0
D 8 195 1659804 9516.12 732 715 174.3
D 1 52 1039636 5958.99 732 715 174.3
D 2 234 21376 118.51 732 715 174.3

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