ASTROSAT CZTI

Data Quality Report

Orbit 15265

Creation date: 2024-06-27T17:06:03.697895
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/AS1A04_207T01_9000002254_15265cztM0_level2.evt modeM0/AS1A04_207T01_9000002254_15265cztM0_level2_quad_clean.evt
Size (bytes)465,382,08091,497,600
Size443.8 MB 87.3 MB
Events in quadrant A3,268,757589,488
Events in quadrant B3,674,793579,574
Events in quadrant C3,586,349589,964
Events in quadrant D3,128,849564,669

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01369834
B01486129
C01469115
D01362423

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6399630.984529%
B64042473.856964%
C6405580.905543%
D6401771.202937%

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 7348 6413 3 3 0.04% 0.05%
B 7348 6413 159 159 2.16% 2.48%
C 7348 6413 0 0 0.00% 0.00%
D 7348 6413 19 19 0.26% 0.30%

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 12 189 191245 1193.24 786 768 159.6
A 9 143 46014 283.44 786 768 159.6
A 15 69 7435 41.77 786 768 159.6
B 3 64 510898 3401.39 769 749 150.0
B 0 205 32220 209.83 769 749 150.0
B 0 190 25235 163.26 769 749 150.0
C 3 233 507638 2892.9 758 762 175.2
C 3 9 120474 683.23 758 762 175.2
C 13 61 5315 25.99 758 762 175.2
D 13 172 77877 417.61 760 738 184.7
D 2 33 62618 335.0 760 738 184.7
D 7 38 35684 189.19 760 738 184.7

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