ASTROSAT CZTI

Data Quality Report

Orbit 08764

Creation date: 2024-06-27T15:36:53.100733
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/AS1A03_038T01_9000001218_08764cztM0_level2.evt modeM0/AS1A03_038T01_9000001218_08764cztM0_level2_quad_clean.evt
Size (bytes)621,558,720102,807,360
Size592.8 MB 98.0 MB
Events in quadrant A4,453,075618,138
Events in quadrant B4,438,898628,666
Events in quadrant C4,261,458622,636
Events in quadrant D5,029,796589,448

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019985352
B020029341
C019837366
D022305591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01962
B01966
C01964
D01960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A94342222.353191%
B94392722.881661%
C94261311.389773%
D94143323.526662%

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 10194 9586 6 6 0.06% 0.06%
B 10194 9590 15 15 0.15% 0.16%
C 10194 9588 3 3 0.03% 0.03%
D 10194 9554 140 140 1.37% 1.47%

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 13 251 114888 497.75 1111 1085 228.6
A 5 16 26113 109.47 1111 1085 228.6
A 13 248 18558 76.42 1111 1085 228.6
B 10 16 95367 433.22 1113 1084 217.6
B 12 111 24999 109.89 1113 1084 217.6
B 11 111 20258 88.1 1113 1084 217.6
C 14 234 21683 81.37 1080 1083 253.2
C 9 54 9287 32.41 1080 1083 253.2
C 13 61 8114 27.77 1080 1083 253.2
D 13 122 299267 1106.41 1057 1029 269.6
D 1 52 286473 1058.94 1057 1029 269.6
D 2 16 253579 936.91 1057 1029 269.6

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