ASTROSAT CZTI

Data Quality Report

Orbit 28902

Creation date: 2024-06-27T19:57:47.648388
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_064T01_9000004144_28902cztM0_level2.evt modeM0/AS1A10_064T01_9000004144_28902cztM0_level2_quad_clean.evt
Size (bytes)529,323,84096,814,080
Size504.8 MB 92.3 MB
Events in quadrant A3,134,492634,774
Events in quadrant B3,253,599648,617
Events in quadrant C4,557,326601,994
Events in quadrant D4,639,987588,621

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135802
B0140012
C0181532
D0182348

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6569400.608921%
B6569490.745928%
C65691652.511798%
D65684076.196711%

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 7633 6568 10 10 0.13% 0.15%
B 7634 6569 1 1 0.01% 0.02%
C 7634 6569 5 5 0.07% 0.08%
D 7632 6567 297 297 3.89% 4.52%

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 13 170 25776 154.67 804 785 161.6
A 13 254 13061 75.98 804 785 161.6
A 3 137 7614 42.26 804 785 161.6
B 15 33 88850 577.08 802 780 152.6
B 12 111 18441 115.72 802 780 152.6
B 11 111 16773 104.79 802 780 152.6
C 3 233 1385496 7650.4 775 779 181.0
C 14 238 124263 682.23 775 779 181.0
C 2 114 15759 82.76 775 779 181.0
D 1 52 1104133 5988.77 770 747 184.2
D 8 195 583229 3161.49 770 747 184.2
D 2 234 26701 140.87 770 747 184.2

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