ASTROSAT CZTI

Data Quality Report

Orbit 26856

Creation date: 2024-06-27T19:33:43.662908
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/AS1T03_224T01_9000003868_26856cztM0_level2.evt modeM0/AS1T03_224T01_9000003868_26856cztM0_level2_quad_clean.evt
Size (bytes)737,760,96096,762,240
Size703.6 MB 92.3 MB
Events in quadrant A4,678,484646,463
Events in quadrant B7,825,909558,018
Events in quadrant C3,421,723643,067
Events in quadrant D5,936,898587,383

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186170
B0280400
C0146570
D0225260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70992163.042682%
B7098202128.472809%
C70981181.662440%
D70996969.804198%

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 7304 7101 76 76 1.04% 1.07%
B 7303 7100 1558 1558 21.33% 21.94%
C 7303 7100 0 0 0.00% 0.00%
D 7303 7100 564 564 7.72% 7.94%

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 1308881 7399.63 872 853 176.8
A 13 254 12076 63.49 872 853 176.8
A 3 137 8319 42.23 872 853 176.8
B 0 189 4258458 27941.97 787 766 152.4
B 10 246 385395 2524.21 787 766 152.4
B 0 190 82477 536.25 787 766 152.4
C 14 238 132519 664.17 839 843 198.3
C 8 128 11141 51.94 839 843 198.3
C 8 112 6051 26.27 839 843 198.3
D 7 80 2083396 10810.62 813 792 192.6
D 1 52 539714 2797.5 813 792 192.6
D 2 250 142991 738.14 813 792 192.6

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