ASTROSAT CZTI

Data Quality Report

Orbit 09818

Creation date: 2024-06-27T15:50:59.697352
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/AS1G05_218T01_9000001394_09818cztM0_level2.evt modeM0/AS1G05_218T01_9000001394_09818cztM0_level2_quad_clean.evt
Size (bytes)671,941,440110,096,640
Size640.8 MB 105.0 MB
Events in quadrant A4,610,131687,600
Events in quadrant B4,474,303697,626
Events in quadrant C4,339,506671,206
Events in quadrant D6,297,730636,413

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025258
B025264
C025264
D025373

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266146782
B0263526951
C0263866908
D03511710292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021
B021
C021
D021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A93562522.693459%
B93052522.708221%
C92802322.500000%
D89323834.287953%

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 12562 10598 1 1 0.01% 0.01%
B 12562 10556 4 4 0.03% 0.04%
C 12562 10566 26 26 0.21% 0.25%
D 12562 10184 132 132 1.05% 1.30%

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 8 15 200506 863.95 1122 1097 230.8
A 1 162 35865 150.63 1122 1097 230.8
A 13 248 30208 126.13 1122 1097 230.8
B 0 214 46577 208.05 1117 1087 218.6
B 4 239 25565 111.95 1117 1087 218.6
B 12 111 25247 110.5 1117 1087 218.6
C 1 3 102825 402.89 1078 1083 252.5
C 10 22 21299 80.05 1078 1083 252.5
C 9 54 9520 33.41 1078 1083 252.5
D 5 113 1464136 5450.13 1026 1002 268.5
D 1 52 520882 1936.54 1026 1002 268.5
D 2 152 176499 653.72 1026 1002 268.5

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