ASTROSAT CZTI

Data Quality Report

Orbit 24928

Creation date: 2024-06-27T19:11:33.850258
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_205T01_9000003652_24928cztM0_level2.evt modeM0/AS1T03_205T01_9000003652_24928cztM0_level2_quad_clean.evt
Size (bytes)479,946,240136,497,600
Size457.7 MB 130.2 MB
Events in quadrant A3,193,402929,322
Events in quadrant B3,295,481939,764
Events in quadrant C4,309,999899,176
Events in quadrant D3,279,927897,659

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137022
B0139912
C0171832
D0140952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6721580.862967%
B6722550.818209%
C67221932.871169%
D6722510.758703%

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 7556 6722 0 0 0.00% 0.00%
B 7557 6723 1 1 0.01% 0.01%
C 7557 6723 15 15 0.20% 0.22%
D 7557 6723 9 9 0.12% 0.13%

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 10684 60.16 827 810 164.1
A 3 137 7085 38.23 827 810 164.1
A 0 226 7059 38.08 827 810 164.1
B 4 216 37301 237.54 818 797 153.7
B 4 80 23865 150.11 818 797 153.7
B 12 111 18271 113.71 818 797 153.7
C 7 247 1002741 5462.36 799 801 183.4
C 14 238 130764 708.53 799 801 183.4
C 2 16 47158 252.73 799 801 183.4
D 1 52 89736 455.39 814 791 195.3
D 8 195 71347 361.24 814 791 195.3
D 7 238 38700 194.09 814 791 195.3

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