ASTROSAT CZTI

Data Quality Report

Orbit 26465

Creation date: 2024-06-27T19:29:22.991502
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_104T02_9000003826_26465cztM0_level2.evt modeM0/AS1A09_104T02_9000003826_26465cztM0_level2_quad_clean.evt
Size (bytes)657,334,08079,560,000
Size626.9 MB 75.9 MB
Events in quadrant A3,542,237504,121
Events in quadrant B3,566,303512,004
Events in quadrant C4,599,096483,932
Events in quadrant D7,708,351403,337

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152890
B0152110
C0181860
D0278000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72501031.420690%
B72511351.861812%
C72514265.875052%
D7251155221.403944%

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 7455 7252 4 4 0.05% 0.06%
B 7456 7251 7 7 0.09% 0.10%
C 7456 7252 182 182 2.44% 2.51%
D 7456 7253 1354 1354 18.16% 18.67%

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 6 16 97842 534.42 890 872 181.4
A 12 189 11928 60.93 890 872 181.4
A 13 254 11875 60.64 890 872 181.4
B 5 172 38560 220.38 886 864 171.0
B 0 230 23267 130.98 886 864 171.0
B 12 111 21073 118.15 886 864 171.0
C 2 16 952714 4770.3 843 850 199.5
C 3 233 146065 727.75 843 850 199.5
C 14 238 131571 655.11 843 850 199.5
D 7 80 2405864 12803.78 779 761 187.8
D 1 52 2046171 10888.92 779 761 187.8
D 12 233 211235 1120.48 779 761 187.8

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