ASTROSAT CZTI

Data Quality Report

Orbit 21200

Creation date: 2024-06-27T18:24:51.253447
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/AS1A06_002T01_9000003134_21200cztM0_level2.evt modeM0/AS1A06_002T01_9000003134_21200cztM0_level2_quad_clean.evt
Size (bytes)500,446,080101,736,000
Size477.3 MB 97.0 MB
Events in quadrant A3,560,535668,564
Events in quadrant B3,811,634671,947
Events in quadrant C3,565,875644,316
Events in quadrant D3,765,325631,035

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150612
B0154232
C0148292
D0156602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6680741.107784%
B6680731.092814%
C66801021.526946%
D6680831.242515%

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 7665 6680 9 9 0.12% 0.13%
B 7665 6680 18 18 0.23% 0.27%
C 7665 6680 10 10 0.13% 0.15%
D 7665 6680 35 35 0.46% 0.52%

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 13 252 272155 1605.17 838 820 169.0
A 11 47 36309 209.95 838 820 169.0
A 8 6 22243 126.73 838 820 169.0
B 0 182 354890 2213.43 828 807 160.0
B 10 247 62535 385.87 828 807 160.0
B 0 197 32441 197.75 828 807 160.0
C 3 233 285625 1527.56 793 798 186.5
C 14 238 123641 658.82 793 798 186.5
C 0 207 63672 337.2 793 798 186.5
D 12 235 195357 989.19 809 787 196.7
D 7 238 161113 815.09 809 787 196.7
D 13 174 104469 527.12 809 787 196.7

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