ASTROSAT CZTI

Data Quality Report

Orbit 26500

Creation date: 2024-06-27T19:29:48.302162
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/AS1C05_017T01_9000003836_26500cztM0_level2.evt modeM0/AS1C05_017T01_9000003836_26500cztM0_level2_quad_clean.evt
Size (bytes)527,846,40084,375,360
Size503.4 MB 80.5 MB
Events in quadrant A3,034,209555,451
Events in quadrant B3,090,536562,552
Events in quadrant C4,605,806498,394
Events in quadrant D4,850,141521,084

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125840
B0126720
C0175070
D0182970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5977470.786348%
B5977560.936925%
C59785208.698561%
D59783395.670793%

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 7072 5977 0 0 0.00% 0.00%
B 7072 5977 0 0 0.00% 0.00%
C 7073 5978 328 328 4.64% 5.49%
D 7073 5978 296 296 4.18% 4.95%

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 13 254 9432 54.52 787 774 158.8
A 3 137 6819 38.07 787 774 158.8
A 0 226 6656 37.04 787 774 158.8
B 0 190 25156 164.33 777 760 148.5
B 12 111 17130 110.26 777 760 148.5
B 11 111 15276 97.78 777 760 148.5
C 4 254 1320418 7925.15 711 719 166.5
C 3 233 276369 1655.35 711 719 166.5
C 2 16 124404 742.76 711 719 166.5
D 1 52 1704788 9245.66 747 730 184.3
D 12 233 128687 694.25 747 730 184.3
D 11 176 120629 650.53 747 730 184.3

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