ASTROSAT CZTI

Data Quality Report

Orbit 26596

Creation date: 2024-06-27T19:30:50.874930
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/AS1A09_095T02_9000003846_26596cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26596cztM0_level2_quad_clean.evt
Size (bytes)750,556,800119,721,600
Size715.8 MB 114.2 MB
Events in quadrant A3,780,640801,737
Events in quadrant B4,938,590810,100
Events in quadrant C5,150,726775,253
Events in quadrant D8,351,406713,892

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163170
B0199660
C0203210
D0299440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7535871.154612%
B75351762.335766%
C75353554.711347%
D7535138818.420703%

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 7945 7536 40 40 0.50% 0.53%
B 7945 7535 61 61 0.77% 0.81%
C 7945 7535 105 105 1.32% 1.39%
D 7945 7535 1300 1300 16.36% 17.25%

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 12 96 260035 1450.88 885 865 178.6
A 0 13 99105 549.96 885 865 178.6
A 13 254 11295 58.39 885 865 178.6
B 0 189 951497 5707.69 882 857 166.6
B 3 64 472615 2832.46 882 857 166.6
B 5 172 23778 137.62 882 857 166.6
C 3 233 1292773 6493.09 847 851 199.0
C 15 208 413282 2072.84 847 851 199.0
C 14 238 135792 678.2 847 851 199.0
D 7 80 2862758 15098.12 780 757 189.6
D 2 250 1214639 6403.68 780 757 189.6
D 1 52 581053 3061.28 780 757 189.6

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