ASTROSAT CZTI

Data Quality Report

Orbit 25968

Creation date: 2024-06-27T19:23:22.087456
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_068T01_9000003760_25968cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25968cztM0_level2_quad_clean.evt
Size (bytes)511,997,760112,893,120
Size488.3 MB 107.7 MB
Events in quadrant A4,162,163771,355
Events in quadrant B3,275,867767,373
Events in quadrant C3,365,656719,703
Events in quadrant D4,288,936735,198

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162530
B0134990
C0138160
D0167760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60952013.297785%
B60961352.214567%
C60961812.969160%
D60962984.888451%

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 7365 6096 0 0 0.00% 0.00%
B 7366 6097 0 0 0.00% 0.00%
C 7366 6096 8 8 0.11% 0.13%
D 7366 6096 121 121 1.64% 1.98%

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 15 169 911523 5426.71 844 830 167.8
A 13 254 9202 49.89 844 830 167.8
A 0 226 7499 39.74 844 830 167.8
B 0 190 44074 281.48 818 800 153.7
B 12 111 17903 111.25 818 800 153.7
B 0 230 16379 101.33 818 800 153.7
C 3 233 187529 1042.34 780 784 179.2
C 14 238 128757 714.3 780 784 179.2
C 7 238 6463 31.7 780 784 179.2
D 1 52 1209187 6311.85 806 785 191.4
D 2 234 23523 118.77 806 785 191.4
D 2 120 14720 72.79 806 785 191.4

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