ASTROSAT CZTI

Data Quality Report

Orbit 28781

Creation date: 2024-06-27T19:56:15.093073
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/AS1C05_019T04_9000004130_28781cztM0_level2.evt modeM0/AS1C05_019T04_9000004130_28781cztM0_level2_quad_clean.evt
Size (bytes)773,873,280112,662,720
Size738.0 MB 107.4 MB
Events in quadrant A3,521,509768,626
Events in quadrant B3,542,405782,953
Events in quadrant C7,788,748647,333
Events in quadrant D8,080,954694,564

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154122
B0154002
C0281502
D0291572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74281572.113624%
B74291982.665231%
C7429213628.752187%
D7429128917.350922%

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 7488 7428 0 0 0.00% 0.00%
B 7489 7429 3 3 0.04% 0.04%
C 7489 7429 683 683 9.12% 9.19%
D 7489 7430 1142 1142 15.25% 15.37%

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 15 174 55679 301.94 894 874 181.5
A 13 254 14584 75.53 894 874 181.5
A 3 137 8688 43.05 894 874 181.5
B 0 156 33665 194.44 881 857 168.7
B 12 111 20759 117.95 881 857 168.7
B 11 111 19026 107.68 881 857 168.7
C 3 233 4067636 22721.91 769 771 179.0
C 14 238 363242 2025.15 769 771 179.0
C 14 254 346462 1931.4 769 771 179.0
D 8 195 3500072 17695.85 826 804 197.7
D 1 52 1331010 6726.87 826 804 197.7
D 2 250 82037 410.8 826 804 197.7

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