ASTROSAT CZTI

Data Quality Report

Orbit 30440

Creation date: 2024-06-27T20:15:16.233481
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/AS1A10_121T02_9000004378_30440cztM0_level2.evt modeM0/AS1A10_121T02_9000004378_30440cztM0_level2_quad_clean.evt
Size (bytes)1,435,697,280195,122,880
Size1.3 GB 186.1 MB
Events in quadrant A8,652,9201,227,907
Events in quadrant B13,135,6061,216,589
Events in quadrant C9,518,5981,185,278
Events in quadrant D11,087,5441,167,286

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0358583
B0496633
C0385213
D0437094

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A161211981.228212%
B161223171.966257%
C161223432.127528%
D161215993.715650%

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 19712 16122 14 14 0.07% 0.09%
B 19713 16123 3 3 0.02% 0.02%
C 19713 16123 30 30 0.15% 0.19%
D 19712 16122 444 444 2.25% 2.75%

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 181433 418.33 2186 2150 428.6
A 8 192 30768 66.78 2186 2150 428.6
A 13 254 27611 59.41 2186 2150 428.6
B 6 159 4536849 11357.7 2146 2097 399.3
B 0 229 117109 288.06 2146 2097 399.3
B 12 111 48132 115.3 2146 2097 399.3
C 3 233 890524 1846.23 2095 2115 481.2
C 14 238 341240 704.74 2095 2115 481.2
C 10 22 45910 91.01 2095 2115 481.2
D 13 104 1466543 2775.41 2092 2052 527.7
D 8 195 643135 1214.94 2092 2052 527.7
D 13 249 357336 673.31 2092 2052 527.7

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