ASTROSAT CZTI

Data Quality Report

Orbit 17084

Creation date: 2024-06-27T17:31:51.027387
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/AS1A05_004T04_9000002534_17084cztM0_level2.evt modeM0/AS1A05_004T04_9000002534_17084cztM0_level2_quad_clean.evt
Size (bytes)585,423,36095,454,720
Size558.3 MB 91.0 MB
Events in quadrant A3,942,120587,022
Events in quadrant B4,165,156595,541
Events in quadrant C4,881,503568,351
Events in quadrant D4,172,994558,936

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174402
B0178022
C0199452
D0183032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83573974.750509%
B83574134.941965%
C83584735.659249%
D83583053.649198%

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 8837 8359 0 0 0.00% 0.00%
B 8837 8358 1 1 0.01% 0.01%
C 8838 8360 6 6 0.07% 0.07%
D 8838 8359 28 28 0.32% 0.33%

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 4 2 9211 39.61 1021 995 207.4
A 0 226 8855 37.9 1021 995 207.4
A 12 194 7649 32.08 1021 995 207.4
B 0 189 56447 280.59 1022 990 197.6
B 4 216 25444 123.73 1022 990 197.6
B 0 197 25044 121.71 1022 990 197.6
C 3 233 724962 3164.27 980 985 228.8
C 9 54 151420 657.5 980 985 228.8
C 14 238 150616 653.99 980 985 228.8
D 1 52 157678 641.2 1000 968 244.4
D 10 70 124732 506.4 1000 968 244.4
D 15 0 78398 316.82 1000 968 244.4

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