ASTROSAT CZTI

Data Quality Report

Orbit 26724

Creation date: 2024-06-27T19:32:10.085285
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/AS1T03_223T01_9000003850_26724cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26724cztM0_level2_quad_clean.evt
Size (bytes)521,435,52079,462,080
Size497.3 MB 75.8 MB
Events in quadrant A3,995,071481,836
Events in quadrant B3,852,124487,843
Events in quadrant C3,524,892473,592
Events in quadrant D3,933,710464,286

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163890
B0157840
C0148260
D0163000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71561582.207937%
B71571702.375297%
C71571021.425178%
D7156871.215763%

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 7701 7157 74 74 0.96% 1.03%
B 7702 7158 87 87 1.13% 1.22%
C 7702 7158 1 1 0.01% 0.01%
D 7701 7157 27 27 0.35% 0.38%

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 537842 2965.3 895 874 181.1
A 13 254 11773 60.19 895 874 181.1
A 3 137 8328 41.16 895 874 181.1
B 0 189 278393 1638.31 884 861 169.4
B 3 112 65856 383.68 884 861 169.4
B 10 246 42704 247.01 884 861 169.4
C 14 238 135125 666.24 856 861 201.5
C 3 233 30122 145.2 856 861 201.5
C 15 208 19792 93.94 856 861 201.5
D 12 227 261410 1234.67 871 844 211.0
D 2 250 213455 1007.44 871 844 211.0
D 1 52 109030 512.63 871 844 211.0

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