ASTROSAT CZTI

Data Quality Report

Orbit 33355

Creation date: 2024-06-27T20:47:49.620933
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_058T15_9000004786_33355cztM0_level2.evt modeM0/AS1A10_058T15_9000004786_33355cztM0_level2_quad_clean.evt
Size (bytes)603,449,28074,684,160
Size575.5 MB 71.2 MB
Events in quadrant A2,899,486488,620
Events in quadrant B3,941,969477,523
Events in quadrant C4,169,284472,474
Events in quadrant D6,878,914423,368

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121953
B0153572
C0160812
D0244992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5708190.332866%
B57082574.502453%
C57083646.377015%
D570895016.643308%

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 7172 5709 8 8 0.11% 0.14%
B 7172 5709 188 188 2.62% 3.29%
C 7172 5709 325 325 4.53% 5.69%
D 7172 5709 873 873 12.17% 15.29%

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 15 169 255767 1864.88 677 665 136.8
A 13 6 10898 74.81 677 665 136.8
A 13 254 8291 55.75 677 665 136.8
B 5 172 674403 5288.84 664 648 127.4
B 0 219 290226 2273.13 664 648 127.4
B 0 245 106588 831.61 664 648 127.4
C 1 23 1087720 7385.24 635 641 147.2
C 15 214 245749 1665.18 635 641 147.2
C 0 10 159315 1077.98 635 641 147.2
D 8 195 1292392 8177.82 606 593 158.0
D 2 250 1171885 7414.95 606 593 158.0
D 1 52 500983 3167.75 606 593 158.0

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