ASTROSAT CZTI

Data Quality Report

Orbit 26404

Creation date: 2024-06-27T19:28:36.000101
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_127T01_9000003816_26404cztM0_level2.evt modeM0/AS1A09_127T01_9000003816_26404cztM0_level2_quad_clean.evt
Size (bytes)549,302,40084,424,320
Size523.9 MB 80.5 MB
Events in quadrant A3,388,349537,525
Events in quadrant B3,548,373549,849
Events in quadrant C5,890,416486,958
Events in quadrant D3,353,540514,227

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142300
B0147350
C0219190
D0144660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6709490.730362%
B6709831.237144%
C670989513.340289%
D6709230.342823%

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 7799 6710 8 8 0.10% 0.12%
B 7799 6710 12 12 0.15% 0.18%
C 7799 6709 516 516 6.62% 7.69%
D 7799 6710 9 9 0.12% 0.13%

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 148030 888.52 837 821 165.7
A 13 254 11511 64.52 837 821 165.7
A 5 203 10733 59.83 837 821 165.7
B 0 189 104760 669.1 839 817 155.3
B 5 172 75146 478.47 839 817 155.3
B 0 244 36878 232.13 839 817 155.3
C 3 233 1894701 10784.22 760 765 175.6
C 2 16 830549 4724.85 760 765 175.6
C 14 238 123927 701.29 760 765 175.6
D 1 52 217463 1123.76 809 790 192.8
D 2 234 32932 166.7 809 790 192.8
D 2 249 16456 81.25 809 790 192.8

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