ASTROSAT CZTI

Data Quality Report

Orbit 26066

Creation date: 2024-06-27T19:24:25.743578
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/AS1A09_142T01_9000003766_26066cztM0_level2.evt modeM0/AS1A09_142T01_9000003766_26066cztM0_level2_quad_clean.evt
Size (bytes)850,806,72064,152,000
Size811.4 MB 61.2 MB
Events in quadrant A3,218,753449,911
Events in quadrant B3,268,644451,685
Events in quadrant C3,210,539427,995
Events in quadrant D15,630,449159,422

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135800
B0137570
C0135980
D0507760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6470570.880989%
B6470681.051005%
C6470961.483771%
D6470562386.908810%

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 7625 6470 0 0 0.00% 0.00%
B 7625 6470 5 5 0.07% 0.08%
C 7625 6470 0 0 0.00% 0.00%
D 7624 6469 5576 5576 73.14% 86.20%

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 11427 63.99 833 816 165.8
A 0 226 7317 39.2 833 816 165.8
A 3 137 7148 38.18 833 816 165.8
B 12 111 18668 113.82 826 806 156.9
B 11 111 16791 101.86 826 806 156.9
B 14 111 14734 88.75 826 806 156.9
C 14 238 128626 702.02 788 793 182.1
C 3 233 7107 34.67 788 793 182.1
C 13 61 5523 25.97 788 793 182.1
D 1 3 13620196 126892.28 439 429 107.3
D 1 52 250789 2332.55 439 429 107.3
D 12 233 39055 359.87 439 429 107.3

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