ASTROSAT CZTI

Data Quality Report

Orbit 19130

Creation date: 2024-06-27T17:59:21.356320
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_046T01_9000002838_19130cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19130cztM0_level2_quad_clean.evt
Size (bytes)2,583,192,960406,716,480
Size2.4 GB 387.9 MB
Events in quadrant A16,088,7462,505,954
Events in quadrant B18,969,0762,556,540
Events in quadrant C16,714,9332,495,052
Events in quadrant D24,127,0252,385,034

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0708376
B0785836
C0712946
D0953326

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07020
B07020
C07020
D07020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A345804961.434355%
B345808092.339503%
C345816091.761083%
D3458117345.014314%

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 37930 34582 5 5 0.01% 0.01%
B 37930 34583 144 144 0.38% 0.42%
C 37931 34585 5 5 0.01% 0.01%
D 37931 34585 1080 1080 2.85% 3.12%

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 37175 39.21 4171 4068 844.2
A 0 226 36212 38.07 4171 4068 844.2
A 3 137 33134 34.43 4171 4068 844.2
B 10 245 962117 1204.58 4158 4041 795.4
B 7 220 865639 1083.28 4158 4041 795.4
B 6 36 425793 530.27 4158 4041 795.4
C 14 238 618794 651.78 4039 4066 943.2
C 3 233 297387 311.0 4039 4066 943.2
C 0 207 41294 39.47 4039 4066 943.2
D 11 176 4170107 4248.36 4029 3913 980.7
D 1 20 2928583 2982.35 4029 3913 980.7
D 1 52 1268255 1289.28 4029 3913 980.7

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