ASTROSAT CZTI

Data Quality Report

Orbit 25502

Creation date: 2024-06-27T19:18:22.738121
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/AS1A08_003T17_9000003720_25502cztM0_level2.evt modeM0/AS1A08_003T17_9000003720_25502cztM0_level2_quad_clean.evt
Size (bytes)476,337,60076,392,000
Size454.3 MB 72.9 MB
Events in quadrant A3,272,446481,623
Events in quadrant B3,331,363490,877
Events in quadrant C3,255,613454,094
Events in quadrant D4,133,459441,344

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134690
B0136190
C0134410
D0164710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6385410.642130%
B6385500.783085%
C6385711.111981%
D63861251.957407%

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 8620 6387 0 0 0.00% 0.00%
B 8620 6387 0 0 0.00% 0.00%
C 8620 6387 0 0 0.00% 0.00%
D 8621 6388 91 91 1.06% 1.42%

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 9552 51.43 847 830 169.6
A 0 226 7350 38.44 847 830 169.6
A 3 137 7229 37.73 847 830 169.6
B 12 111 19281 115.47 845 826 159.8
B 11 111 17189 102.38 845 826 159.8
B 14 111 15898 94.3 845 826 159.8
C 14 238 130609 694.63 799 805 186.9
C 13 61 5467 24.95 799 805 186.9
C 7 247 4496 19.75 799 805 186.9
D 8 195 575594 2952.77 800 778 194.7
D 1 52 402010 2061.09 800 778 194.7
D 12 233 124711 636.63 800 778 194.7

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