ASTROSAT CZTI

Data Quality Report

Orbit 16576

Creation date: 2024-06-27T17:24:36.956555
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_020T01_9000002444_16576cztM0_level2.evt modeM0/AS1T03_020T01_9000002444_16576cztM0_level2_quad_clean.evt
Size (bytes)535,014,720106,536,960
Size510.2 MB 101.6 MB
Events in quadrant A3,302,740696,171
Events in quadrant B3,755,143714,376
Events in quadrant C5,208,588663,788
Events in quadrant D3,451,998654,747

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148083
B0161292
C0202042
D0156092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7146190.265883%
B7146590.825637%
C71462483.470473%
D71461371.917156%

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 7837 7148 1 1 0.01% 0.01%
B 7837 7148 0 0 0.00% 0.00%
C 7837 7148 23 23 0.29% 0.32%
D 7837 7148 107 107 1.37% 1.50%

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 15 174 127218 758.07 820 801 166.8
A 9 143 11063 61.54 820 801 166.8
A 0 226 7284 38.88 820 801 166.8
B 0 85 204302 1286.95 830 808 158.1
B 15 35 152466 959.12 830 808 158.1
B 0 229 51672 321.68 830 808 158.1
C 3 233 1984247 10808.61 791 796 183.5
C 14 238 122181 661.47 791 796 183.5
C 7 247 10236 51.44 791 796 183.5
D 10 70 332387 1739.32 794 772 190.7
D 2 14 53076 274.33 794 772 190.7
D 2 234 30347 155.12 794 772 190.7

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