ASTROSAT CZTI

Data Quality Report

Orbit 20900

Creation date: 2024-06-27T18:20:54.611124
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_002T03_9000003080_20900cztM0_level2.evt modeM0/AS1A06_002T03_9000003080_20900cztM0_level2_quad_clean.evt
Size (bytes)504,843,84074,275,200
Size481.5 MB 70.8 MB
Events in quadrant A3,250,572458,887
Events in quadrant B3,624,719465,519
Events in quadrant C3,333,209457,402
Events in quadrant D4,655,996430,011

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133281
B0145841
C0135811
D0177691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6267440.702090%
B6266991.579955%
C6266891.420364%
D62664146.607086%

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 7598 6269 3 3 0.04% 0.05%
B 7597 6268 28 28 0.37% 0.45%
C 7597 6268 0 0 0.00% 0.00%
D 7597 6268 358 358 4.71% 5.71%

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 15 174 15093 86.76 838 824 164.5
A 6 16 12157 68.9 838 824 164.5
A 0 226 7202 38.78 838 824 164.5
B 7 220 211896 1363.55 842 823 154.8
B 0 230 48589 308.57 842 823 154.8
B 0 219 36739 232.02 842 823 154.8
C 14 238 132127 700.96 820 829 187.3
C 13 61 5660 25.79 820 829 187.3
C 9 54 3578 14.68 820 829 187.3
D 1 52 1092830 5702.28 805 785 191.5
D 7 223 187523 975.08 805 785 191.5
D 5 222 133899 695.07 805 785 191.5

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