ASTROSAT CZTI

Data Quality Report

Orbit 19625

Creation date: 2024-06-27T18:04:53.978174
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/AS1T03_116T01_9000002916_19625cztM0_level2.evt modeM0/AS1T03_116T01_9000002916_19625cztM0_level2_quad_clean.evt
Size (bytes)478,863,36099,720,000
Size456.7 MB 95.1 MB
Events in quadrant A3,103,495654,061
Events in quadrant B3,234,303672,804
Events in quadrant C3,202,490638,932
Events in quadrant D4,530,387610,247

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132762
B0135982
C0135912
D0175783

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6365370.581304%
B6365620.974077%
C6365651.021210%
D63641882.954117%

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 7600 6366 0 0 0.00% 0.00%
B 7600 6366 4 4 0.05% 0.06%
C 7600 6366 0 0 0.00% 0.00%
D 7599 6365 215 215 2.83% 3.38%

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 0 226 6918 37.8 804 790 162.1
A 3 137 6139 33.0 804 790 162.1
A 13 254 5903 31.54 804 790 162.1
B 0 230 26098 164.59 809 790 153.8
B 12 111 18235 113.45 809 790 153.8
B 10 247 16840 104.38 809 790 153.8
C 14 238 123113 670.38 778 784 182.5
C 3 233 31783 169.88 778 784 182.5
C 8 208 12441 63.88 778 784 182.5
D 7 238 1060691 5655.15 773 752 187.4
D 1 52 508825 2710.75 773 752 187.4
D 2 234 23087 119.16 773 752 187.4

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