ASTROSAT CZTI

Data Quality Report

Orbit 27826

Creation date: 2024-06-27T19:44:54.400997
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_048T08_9000004020_27826cztM0_level2.evt modeM0/AS1A10_048T08_9000004020_27826cztM0_level2_quad_clean.evt
Size (bytes)634,147,20093,263,040
Size604.8 MB 88.9 MB
Events in quadrant A3,878,720582,772
Events in quadrant B4,212,802587,441
Events in quadrant C4,043,018561,497
Events in quadrant D6,521,027528,745

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168770
B0176990
C0171380
D0248360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8121941.157493%
B81222232.745629%
C81222022.487072%
D81227839.640483%

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 8756 8121 0 0 0.00% 0.00%
B 8757 8122 62 62 0.71% 0.76%
C 8757 8122 0 0 0.00% 0.00%
D 8757 8123 676 676 7.72% 8.32%

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 13 254 12570 56.55 1003 979 205.0
A 3 137 10065 44.33 1003 979 205.0
A 0 226 8489 36.64 1003 979 205.0
B 10 245 202773 1044.18 995 968 193.3
B 0 229 37960 191.4 995 968 193.3
B 12 111 24260 120.52 995 968 193.3
C 14 238 151522 657.5 959 963 229.0
C 3 233 110857 479.91 959 963 229.0
C 6 112 15716 64.43 959 963 229.0
D 1 52 2765500 12193.97 939 911 226.7
D 2 250 104644 457.54 939 911 226.7
D 13 104 54712 237.3 939 911 226.7

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