ASTROSAT CZTI

Data Quality Report

Orbit 42410

Creation date: 2024-06-27T22:39:55.818819
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/AS1T05_138T01_9000005802_42410cztM0_level2.fits modeM0/AS1T05_138T01_9000005802_42410cztM0_level2_quad_clean.evt
Size (bytes)535,248,000126,394,560
Size510.5 MB 120.5 MB
Events in quadrant A4,174,200858,461
Events in quadrant B3,704,962881,563
Events in quadrant C3,835,079833,178
Events in quadrant D7,484,029702,747

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169962
B0165002
C0162802
D0278142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A792090.113636%
B7920390.492424%
C7920330.416667%
D792085010.732323%

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 10754 7922 4 4 0.04% 0.05%
B 10754 7922 19 19 0.18% 0.24%
C 10754 7922 28 28 0.26% 0.35%
D 10754 7922 764 764 7.10% 9.64%

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 10 83 721718 3998.32 878 860 180.3
A 13 248 16844 88.66 878 860 180.3
A 15 235 16258 85.41 878 860 180.3
B 5 255 101906 595.77 872 848 169.6
B 0 186 78253 456.33 872 848 169.6
B 5 172 39858 229.98 872 848 169.6
C 15 214 327635 1644.18 853 856 198.7
C 0 207 121993 609.5 853 856 198.7
C 9 54 19518 93.9 853 856 198.7
D 2 16 1165275 5753.06 821 795 202.4
D 13 249 798393 3940.49 821 795 202.4
D 6 219 768727 3793.93 821 795 202.4

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