ASTROSAT CZTI

Data Quality Report

Orbit 26102

Creation date: 2024-06-27T19:24:44.649666
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_018T01_9000003774_26102cztM0_level2.evt modeM0/AS1A09_018T01_9000003774_26102cztM0_level2_quad_clean.evt
Size (bytes)554,636,160103,930,560
Size528.9 MB 99.1 MB
Events in quadrant A3,804,315669,846
Events in quadrant B3,893,656681,274
Events in quadrant C3,932,094641,554
Events in quadrant D4,651,171625,924

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159330
B0161430
C0162400
D0187880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76021862.446725%
B76022242.946593%
C76022403.157064%
D76022503.288608%

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 7812 7602 0 0 0.00% 0.00%
B 7812 7602 1 1 0.01% 0.01%
C 7812 7602 1 1 0.01% 0.01%
D 7812 7602 118 118 1.51% 1.55%

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 13 254 11967 55.11 986 965 199.7
A 3 137 9341 41.95 986 965 199.7
A 0 226 8282 36.65 986 965 199.7
B 0 190 34545 176.99 975 949 189.8
B 12 111 23239 117.43 975 949 189.8
B 11 111 21463 108.07 975 949 189.8
C 14 238 147674 665.16 935 939 220.6
C 3 233 110747 497.77 935 939 220.6
C 13 250 20475 88.56 935 939 220.6
D 1 52 637274 2787.37 950 928 228.3
D 12 233 287892 1256.98 950 928 228.3
D 7 223 38962 166.6 950 928 228.3

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