ASTROSAT CZTI

Data Quality Report

Orbit 00207

Creation date: 2024-06-27T13:57:53.714143
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/AS1P01_140T01_9000000018_00207cztM0_level2.evt modeM0/AS1P01_140T01_9000000018_00207cztM0_level2_quad_clean.evt
Size (bytes)933,704,64050,086,080
Size890.5 MB 47.8 MB
Events in quadrant A7,121,611282,979
Events in quadrant B7,742,634254,998
Events in quadrant C6,461,590282,585
Events in quadrant D6,550,344274,158

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05085925431
B05466627334
C04694423473
D04750323756

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A603360.099453%
B60333756.215813%
C603310.016576%
D603250.082891%

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 7624 6035 152 152 1.99% 2.52%
B 7624 6035 429 429 5.63% 7.11%
C 7624 6035 42 42 0.55% 0.70%
D 7624 6035 79 79 1.04% 1.31%

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 15 66 65766 157.29 1808 1789 406.7
A 0 253 28750 66.28 1808 1789 406.7
A 0 96 15917 34.73 1808 1789 406.7
B 8 5 1087034 2645.71 1732 1738 410.2
B 0 190 12610 26.5 1732 1738 410.2
B 0 183 12410 26.02 1732 1738 410.2
C 7 222 9560 17.03 1640 1699 461.5
C 9 188 7226 11.98 1640 1699 461.5
C 1 1 4631 6.35 1640 1699 461.5
D 1 4 213261 432.32 1606 1659 489.5
D 9 51 48927 96.57 1606 1659 489.5
D 10 154 43309 85.09 1606 1659 489.5

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