ASTROSAT CZTI

Data Quality Report

Orbit 24803

Creation date: 2024-06-27T19:10:03.343947
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_197T01_9000003626_24803cztM0_level2.evt modeM0/AS1T03_197T01_9000003626_24803cztM0_level2_quad_clean.evt
Size (bytes)950,353,920183,888,000
Size906.3 MB 175.4 MB
Events in quadrant A6,538,9231,169,242
Events in quadrant B6,918,5981,177,919
Events in quadrant C7,586,0531,136,465
Events in quadrant D6,796,5211,125,536

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02820
D02820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285713
B0297113
C0314623
D0296313

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13916920.661110%
B139161831.315033%
C139163042.184536%
D139161000.718597%

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 15651 13919 0 0 0.00% 0.00%
B 15651 13919 5 5 0.03% 0.04%
C 15651 13919 0 0 0.00% 0.00%
D 15651 13919 13 13 0.08% 0.09%

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 21951 59.7 1689 1653 340.0
A 11 208 21340 57.9 1689 1653 340.0
A 3 137 16082 42.44 1689 1653 340.0
B 3 64 119925 368.42 1678 1635 321.1
B 0 189 82749 252.63 1678 1635 321.1
B 7 202 45318 136.05 1678 1635 321.1
C 7 247 984115 2591.83 1622 1632 379.1
C 14 238 258835 678.51 1622 1632 379.1
C 2 16 23330 57.24 1622 1632 379.1
D 8 195 310820 778.2 1644 1594 397.4
D 1 52 224192 560.19 1644 1594 397.4
D 2 234 57677 141.14 1644 1594 397.4

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