ASTROSAT CZTI

Data Quality Report

Orbit 45023

Creation date: 2024-06-27T23:09:06.319195
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/AS1A13_020T01_9000006040_45023cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45023cztM0_level2_quad_clean.evt
Size (bytes)504,299,52099,679,680
Size480.9 MB 95.1 MB
Events in quadrant A4,846,180679,003
Events in quadrant B3,492,090699,410
Events in quadrant C3,085,967680,053
Events in quadrant D6,781,094543,207

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186061
B0143162
C0132291
D0242841

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59601252.097315%
B59601762.953020%
C59601121.879195%
D5960101116.963087%

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 7081 5961 4 4 0.06% 0.07%
B 7081 5961 72 72 1.02% 1.21%
C 7081 5961 55 55 0.78% 0.92%
D 7081 5961 844 844 11.92% 14.16%

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 10 83 2101443 14500.35 700 684 144.9
A 13 248 20230 134.91 700 684 144.9
A 0 243 19611 130.64 700 684 144.9
B 0 183 226513 1649.37 689 666 136.9
B 0 189 210254 1530.63 689 666 136.9
B 5 172 145396 1056.97 689 666 136.9
C 14 254 203741 1255.76 690 692 161.7
C 1 3 178621 1100.4 690 692 161.7
C 3 233 8717 49.63 690 692 161.7
D 5 222 1575840 9576.06 657 637 164.5
D 5 235 617047 3747.31 657 637 164.5
D 11 241 486351 2952.78 657 637 164.5

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