ASTROSAT CZTI

Data Quality Report

Orbit 30251

Creation date: 2024-06-27T20:12:41.899059
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/AS1A10_007T01_9000004350_30251cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30251cztM0_level2_quad_clean.evt
Size (bytes)592,801,920110,730,240
Size565.3 MB 105.6 MB
Events in quadrant A3,294,715743,824
Events in quadrant B7,048,753701,814
Events in quadrant C3,446,854745,131
Events in quadrant D3,733,893720,538

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137922
B0254012
C0142382
D0152312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6336430.678662%
B6337108217.074325%
C63371372.161906%
D6337460.725896%

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 8811 6338 5 5 0.06% 0.08%
B 8812 6338 706 706 8.01% 11.14%
C 8812 6339 0 0 0.00% 0.00%
D 8812 6339 30 30 0.34% 0.47%

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 8 192 25794 147.63 844 829 169.1
A 13 254 11955 65.79 844 829 169.1
A 0 13 11710 64.34 844 829 169.1
B 6 36 2126058 14093.69 804 786 150.8
B 6 159 1733071 11487.61 804 786 150.8
B 4 80 29372 189.57 804 786 150.8
C 14 238 151103 775.93 829 838 193.7
C 14 254 25420 126.93 829 838 193.7
C 2 114 14814 72.17 829 838 193.7
D 8 195 303167 1541.43 823 809 196.2
D 1 52 167924 851.95 823 809 196.2
D 2 250 36792 183.44 823 809 196.2

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