ASTROSAT CZTI

Data Quality Report

Orbit 18933

Creation date: 2024-06-27T17:56:43.746578
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/AS1A05_163T01_9000002820_18933cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18933cztM0_level2_quad_clean.evt
Size (bytes)571,334,40099,694,080
Size544.9 MB 95.1 MB
Events in quadrant A3,641,084660,528
Events in quadrant B5,118,545648,339
Events in quadrant C3,362,511638,429
Events in quadrant D4,740,521618,418

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146412
B0193302
C0137622
D0182762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6493831.278300%
B64925698.764633%
C64921021.571165%
D64923174.882933%

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 7808 6494 2 2 0.03% 0.03%
B 7807 6493 314 314 4.02% 4.84%
C 7807 6493 0 0 0.00% 0.00%
D 7807 6493 228 228 2.92% 3.51%

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 14 235 307036 1770.38 864 848 173.0
A 13 254 9730 51.36 864 848 173.0
A 0 226 7720 39.73 864 848 173.0
B 3 112 1616701 10327.72 834 816 156.5
B 7 220 89566 567.23 834 816 156.5
B 4 216 54354 342.18 834 816 156.5
C 14 238 130199 686.28 815 822 188.5
C 3 233 52040 271.69 815 822 188.5
C 13 61 5863 26.74 815 822 188.5
D 7 238 706197 3568.48 820 799 197.7
D 1 52 680194 3436.94 820 799 197.7
D 14 34 68439 342.18 820 799 197.7

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