ASTROSAT CZTI

Data Quality Report

Orbit 27609

Creation date: 2024-06-27T19:42:08.940386
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/AS1T03_257T01_9000003976_27609cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27609cztM0_level2_quad_clean.evt
Size (bytes)552,732,48090,622,080
Size527.1 MB 86.4 MB
Events in quadrant A3,566,096572,278
Events in quadrant B4,327,419577,398
Events in quadrant C4,515,474526,833
Events in quadrant D3,818,111542,726

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154740
B0176050
C0181750
D0164440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75461662.199841%
B75473374.465350%
C75475947.870677%
D75471722.279051%

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 7696 7548 0 0 0.00% 0.00%
B 7697 7549 80 80 1.04% 1.06%
C 7697 7549 383 383 4.98% 5.07%
D 7697 7549 51 51 0.66% 0.68%

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 10996 54.05 923 899 186.8
A 3 137 9209 44.48 923 899 186.8
A 0 226 7894 37.44 923 899 186.8
B 10 245 594344 3358.72 911 884 176.7
B 3 64 82330 460.95 911 884 176.7
B 0 190 36618 202.24 911 884 176.7
C 15 208 982365 4795.75 863 868 204.7
C 14 238 137641 668.29 863 868 204.7
C 2 16 26261 124.07 863 868 204.7
D 7 80 241591 1124.62 893 866 214.0
D 2 250 113444 525.94 893 866 214.0
D 2 234 31423 142.76 893 866 214.0

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