ASTROSAT CZTI

Data Quality Report

Orbit 14243

Creation date: 2024-06-27T16:52:25.488878
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/AS1G08_069T01_9000002102_14243cztM0_level2.evt modeM0/AS1G08_069T01_9000002102_14243cztM0_level2_quad_clean.evt
Size (bytes)619,459,20068,328,000
Size590.8 MB 65.2 MB
Events in quadrant A3,639,622440,075
Events in quadrant B3,588,050435,082
Events in quadrant C3,448,003421,403
Events in quadrant D7,667,904341,580

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146583
B0143092
C0140582
D0272342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61611071.736731%
B61611842.986528%
C6161500.811557%
D6161108017.529622%

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 7487 6163 16 16 0.21% 0.26%
B 7487 6163 67 67 0.89% 1.09%
C 7487 6163 1 1 0.01% 0.02%
D 7487 6163 864 864 11.54% 14.02%

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 288004 1759.49 829 815 163.2
A 9 143 149761 912.53 829 815 163.2
A 8 15 9083 50.65 829 815 163.2
B 0 229 193946 1276.07 813 796 151.4
B 15 201 159054 1045.55 813 796 151.4
B 4 97 26886 172.37 813 796 151.4
C 3 233 327047 1803.55 799 805 180.9
C 13 61 5641 26.73 799 805 180.9
C 10 22 5629 26.67 799 805 180.9
D 1 52 1929046 10972.21 747 731 175.7
D 13 122 1068571 6076.06 747 731 175.7
D 5 222 742659 4221.61 747 731 175.7

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