ASTROSAT CZTI

Data Quality Report

Orbit 20794

Creation date: 2024-06-27T18:19:39.832249
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/AS1A05_013T01_9000003070_20794cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20794cztM0_level2_quad_clean.evt
Size (bytes)520,868,16080,104,320
Size496.7 MB 76.4 MB
Events in quadrant A3,272,816501,483
Events in quadrant B3,691,873493,767
Events in quadrant C3,315,967482,444
Events in quadrant D5,016,518457,717

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143452
B0155242
C0143792
D0195642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7038460.653595%
B70381101.562944%
C7038711.008809%
D70392693.821566%

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 8658 7038 0 0 0.00% 0.00%
B 8658 7038 34 34 0.39% 0.48%
C 8658 7038 0 0 0.00% 0.00%
D 8659 7039 218 218 2.52% 3.10%

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 0 226 7294 37.7 851 834 171.4
A 3 137 7012 36.05 851 834 171.4
A 12 194 5944 29.82 851 834 171.4
B 7 220 223224 1385.83 844 824 160.5
B 0 197 49367 302.48 844 824 160.5
B 0 189 44471 271.97 844 824 160.5
C 14 238 129122 673.96 813 817 190.4
C 7 247 10793 52.4 813 817 190.4
C 13 61 5643 25.35 813 817 190.4
D 12 227 433039 2222.82 806 782 194.5
D 1 52 333089 1708.84 806 782 194.5
D 7 38 317892 1630.7 806 782 194.5

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