ASTROSAT CZTI

Data Quality Report

Orbit 25449

Creation date: 2024-06-27T19:17:47.958754
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_085T02_9000003716_25449cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25449cztM0_level2_quad_clean.evt
Size (bytes)501,747,84095,987,520
Size478.5 MB 91.5 MB
Events in quadrant A3,411,216633,608
Events in quadrant B3,218,451633,393
Events in quadrant C3,731,444604,129
Events in quadrant D4,398,267587,421

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139320
B0134720
C0150890
D0171900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6427941.462580%
B6428901.400124%
C64282553.967019%
D64282704.200373%

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 7352 6428 0 0 0.00% 0.00%
B 7353 6429 0 0 0.00% 0.00%
C 7353 6429 26 26 0.35% 0.40%
D 7353 6429 182 182 2.48% 2.83%

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 6 16 195681 1164.7 833 817 167.3
A 13 254 10381 57.16 833 817 167.3
A 0 226 7405 39.38 833 817 167.3
B 12 111 18971 116.73 813 795 155.7
B 15 32 17174 105.19 813 795 155.7
B 11 111 16922 103.57 813 795 155.7
C 9 54 444607 2434.05 780 786 182.3
C 14 238 124579 678.92 780 786 182.3
C 7 87 84122 457.04 780 786 182.3
D 1 52 443167 2272.18 800 778 194.7
D 7 238 394606 2022.76 800 778 194.7
D 9 35 210854 1078.98 800 778 194.7

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