ASTROSAT CZTI

Data Quality Report

Orbit 37439

Creation date: 2024-06-27T21:40:01.050373
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/AS1A09_002T01_9000005322_37439cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37439cztM0_level2_quad_clean.evt
Size (bytes)456,091,20084,191,040
Size435.0 MB 80.3 MB
Events in quadrant A3,497,084530,050
Events in quadrant B3,415,577532,781
Events in quadrant C3,142,512549,831
Events in quadrant D3,359,467527,037

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140172
B0140231
C0129881
D0139551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5863430.733413%
B58631232.097902%
C5863831.415658%
D5863961.637387%

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 7175 5864 33 33 0.46% 0.56%
B 7175 5864 82 82 1.14% 1.40%
C 7175 5864 61 61 0.85% 1.04%
D 7175 5864 101 101 1.41% 1.72%

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 15 222 451967 3395.04 655 642 132.9
A 10 83 266343 1998.71 655 642 132.9
A 7 3 89044 664.99 655 642 132.9
B 4 171 352868 2859.2 647 630 123.2
B 5 200 128895 1041.16 647 630 123.2
B 4 232 106632 860.44 647 630 123.2
C 15 214 263549 1759.35 640 646 149.4
C 14 254 241621 1612.61 640 646 149.4
C 15 208 75049 497.91 640 646 149.4
D 2 249 333564 2127.52 642 624 156.5
D 13 249 164937 1049.98 642 624 156.5
D 2 153 95105 603.74 642 624 156.5

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