ASTROSAT CZTI

Data Quality Report

Orbit 27076

Creation date: 2024-06-27T19:36:13.687490
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/AS1T03_236T01_9000003908_27076cztM0_level2.evt modeM0/AS1T03_236T01_9000003908_27076cztM0_level2_quad_clean.evt
Size (bytes)593,032,32071,861,760
Size565.6 MB 68.5 MB
Events in quadrant A3,813,783425,267
Events in quadrant B3,392,844438,940
Events in quadrant C3,357,716430,119
Events in quadrant D6,922,346394,865

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156410
B0142960
C0142320
D0253410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69911121.602060%
B6991781.115720%
C6991901.287369%
D699195013.588900%

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 7741 6992 28 28 0.36% 0.40%
B 7741 6992 1 1 0.01% 0.01%
C 7741 6992 1 1 0.01% 0.01%
D 7741 6992 824 824 10.64% 11.78%

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 488045 2810.91 855 834 173.3
A 6 16 24913 138.92 855 834 173.3
A 13 254 10854 57.81 855 834 173.3
B 3 112 23396 136.97 853 832 164.7
B 12 111 20902 121.83 853 832 164.7
B 11 111 18780 108.95 853 832 164.7
C 14 238 131290 664.91 825 829 196.2
C 15 208 6675 29.79 825 829 196.2
C 13 61 5742 25.04 825 829 196.2
D 1 52 3830544 19955.33 788 764 191.9
D 2 250 95360 492.9 788 764 191.9
D 2 234 27465 139.13 788 764 191.9

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