ASTROSAT CZTI

Data Quality Report

Orbit 18095

Creation date: 2024-06-27T17:45:22.416070
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_080T01_9000002686_18095cztM0_level2.evt modeM0/AS1T03_080T01_9000002686_18095cztM0_level2_quad_clean.evt
Size (bytes)492,888,960122,843,520
Size470.1 MB 117.2 MB
Events in quadrant A2,983,179844,050
Events in quadrant B3,214,100845,043
Events in quadrant C3,015,560819,596
Events in quadrant D5,286,996772,694

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130241
B0136411
C0128621
D0199161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6288941.494911%
B62881091.733461%
C62891181.876292%
D628974911.909684%

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 7268 6289 3 3 0.04% 0.05%
B 7268 6289 8 8 0.11% 0.13%
C 7269 6290 0 0 0.00% 0.00%
D 7269 6290 499 499 6.86% 7.93%

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 4 2 47349 307.37 760 746 151.6
A 15 174 14366 89.83 760 746 151.6
A 0 226 6635 38.84 760 746 151.6
B 0 189 95689 671.44 753 731 141.4
B 0 197 65120 455.29 753 731 141.4
B 4 171 30998 214.02 753 731 141.4
C 14 238 113679 667.77 731 734 169.1
C 3 233 44629 259.52 731 734 169.1
C 13 61 5216 26.5 731 734 169.1
D 7 238 1059947 6107.26 714 693 173.4
D 11 176 958102 5520.06 714 693 173.4
D 1 52 477643 2749.92 714 693 173.4

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