ASTROSAT CZTI

Data Quality Report

Orbit 27931

Creation date: 2024-06-27T19:46:07.056206
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/AS1A10_049T01_9000004032_27931cztM0_level2.evt modeM0/AS1A10_049T01_9000004032_27931cztM0_level2_quad_clean.evt
Size (bytes)485,205,12099,552,960
Size462.7 MB 94.9 MB
Events in quadrant A3,103,528657,638
Events in quadrant B3,782,851657,245
Events in quadrant C3,252,103626,680
Events in quadrant D4,107,594612,923

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134080
B0153140
C0136950
D0164220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6601320.484775%
B66022123.211148%
C6601811.227087%
D66011952.954098%

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 7516 6601 0 0 0.00% 0.00%
B 7517 6602 125 125 1.66% 1.89%
C 7516 6601 0 0 0.00% 0.00%
D 7516 6601 163 163 2.17% 2.47%

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 11567 66.89 803 785 161.2
A 3 137 7840 43.77 803 785 161.2
A 0 226 6826 37.48 803 785 161.2
B 10 245 630130 4175.71 792 772 150.7
B 0 230 19244 122.56 792 772 150.7
B 12 111 18941 120.55 792 772 150.7
C 14 238 125163 682.36 776 779 182.3
C 3 233 71894 390.13 776 779 182.3
C 10 22 20031 105.62 776 779 182.3
D 1 52 528048 2857.81 773 749 184.5
D 2 250 410619 2221.38 773 749 184.5
D 8 195 149940 808.57 773 749 184.5

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