ASTROSAT CZTI

Data Quality Report

Orbit 22381

Creation date: 2024-06-27T18:40:05.181320
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/AS1A07_007T04_9000003310_22381cztM0_level2.evt modeM0/AS1A07_007T04_9000003310_22381cztM0_level2_quad_clean.evt
Size (bytes)494,657,28083,367,360
Size471.7 MB 79.5 MB
Events in quadrant A3,435,097513,343
Events in quadrant B3,589,829520,029
Events in quadrant C3,493,674498,086
Events in quadrant D3,962,527481,171

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150682
B0153972
C0151382
D0169412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7355690.938137%
B73561181.604133%
C73561221.658510%
D73561281.740076%

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 7920 7356 0 0 0.00% 0.00%
B 7921 7357 1 1 0.01% 0.01%
C 7921 7357 0 0 0.00% 0.00%
D 7921 7357 77 77 0.97% 1.05%

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 10523 53.79 888 868 179.5
A 13 170 9725 49.35 888 868 179.5
A 0 226 7787 38.55 888 868 179.5
B 0 245 55274 322.32 890 866 168.8
B 0 190 22929 130.7 890 866 168.8
B 12 111 20710 117.56 890 866 168.8
C 14 238 135669 670.2 859 863 201.1
C 13 61 6135 26.21 859 863 201.1
C 10 22 5653 23.81 859 863 201.1
D 1 52 648932 3078.83 862 836 210.5
D 2 234 30437 140.62 862 836 210.5
D 13 172 24524 112.53 862 836 210.5

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