ASTROSAT CZTI

Data Quality Report

Orbit 38036

Creation date: 2024-06-27T21:47:36.059366
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/AS1A11_024T01_9000005358_38036cztM0_level2.fits modeM0/AS1A11_024T01_9000005358_38036cztM0_level2_quad_clean.evt
Size (bytes)968,999,040257,146,560
Size924.1 MB 245.2 MB
Events in quadrant A8,362,9961,741,299
Events in quadrant B8,863,8401,748,573
Events in quadrant C8,145,0561,702,263
Events in quadrant D9,315,9581,540,968

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03100
B03100
C03100
D03100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343924
B0363513
C0337963
D0375963

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15257440.288392%
B152574272.798715%
C152571110.727535%
D152573202.097398%

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 19586 15260 18 18 0.09% 0.12%
B 19586 15260 277 277 1.41% 1.82%
C 19586 15260 87 87 0.44% 0.57%
D 19586 15260 274 274 1.40% 1.80%

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 911671 2570.25 1760 1726 354.0
A 12 16 484993 1365.05 1760 1726 354.0
A 12 194 82711 228.75 1760 1726 354.0
B 5 172 578619 1731.13 1746 1698 333.3
B 5 184 313465 935.5 1746 1698 333.3
B 4 171 257902 768.77 1746 1698 333.3
C 1 23 684995 1708.33 1719 1731 400.0
C 15 214 634737 1582.67 1719 1731 400.0
C 15 159 35865 85.34 1719 1731 400.0
D 2 250 1117929 2659.06 1701 1658 419.8
D 7 223 371301 880.52 1701 1658 419.8
D 10 199 216689 512.22 1701 1658 419.8

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