ASTROSAT CZTI

Data Quality Report

Orbit 23305

Creation date: 2024-06-27T18:52:35.291873
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/AS1A07_148T02_9000003444_23305cztM0_level2.evt modeM0/AS1A07_148T02_9000003444_23305cztM0_level2_quad_clean.evt
Size (bytes)510,681,60065,695,680
Size487.0 MB 62.7 MB
Events in quadrant A3,406,619396,378
Events in quadrant B3,434,616398,750
Events in quadrant C3,448,603381,700
Events in quadrant D4,749,372373,006

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138851
B0139171
C0139621
D0184311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62891272.019399%
B62901332.114467%
C62901642.607313%
D62903014.785374%

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 7549 6289 0 0 0.00% 0.00%
B 7550 6290 0 0 0.00% 0.00%
C 7550 6290 1 1 0.01% 0.02%
D 7550 6290 189 189 2.50% 3.00%

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 10443 54.66 883 868 175.2
A 0 226 7861 39.92 883 868 175.2
A 3 137 7159 35.92 883 868 175.2
B 12 111 18571 108.42 869 851 163.4
B 11 111 16344 94.79 869 851 163.4
B 0 230 14641 84.37 869 851 163.4
C 14 238 134675 696.61 834 842 192.1
C 10 9 23492 117.9 834 842 192.1
C 7 247 13115 63.88 834 842 192.1
D 1 52 773299 3765.36 845 821 205.2
D 7 238 505931 2462.11 845 821 205.2
D 1 239 105255 509.05 845 821 205.2

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