ASTROSAT CZTI

Data Quality Report

Orbit 18836

Creation date: 2024-06-27T17:55:27.727665
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/AS1A05_173T01_9000002812_18836cztM0_level2.evt modeM0/AS1A05_173T01_9000002812_18836cztM0_level2_quad_clean.evt
Size (bytes)561,196,80077,414,400
Size535.2 MB 73.8 MB
Events in quadrant A3,662,492470,802
Events in quadrant B4,005,682470,150
Events in quadrant C3,728,370454,877
Events in quadrant D5,093,922429,626

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154971
B0164741
C0156902
D0200661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7447720.966832%
B74481291.732009%
C74471552.081375%
D74473664.914731%

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 7732 7448 1 1 0.01% 0.01%
B 7733 7449 22 22 0.28% 0.30%
C 7732 7448 11 11 0.14% 0.15%
D 7732 7448 268 268 3.47% 3.60%

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 13037 63.67 938 919 190.3
A 9 143 12145 58.98 938 919 190.3
A 11 29 11375 54.94 938 919 190.3
B 0 229 91316 496.8 931 908 182.0
B 12 18 59949 324.44 931 908 182.0
B 4 216 43183 232.3 931 908 182.0
C 14 238 135124 637.96 889 894 210.4
C 9 54 66387 311.27 889 894 210.4
C 0 207 32364 149.57 889 894 210.4
D 7 238 1104102 4990.15 899 874 221.1
D 1 52 312163 1408.03 899 874 221.1
D 12 225 126477 568.13 899 874 221.1

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