ASTROSAT CZTI

Data Quality Report

Orbit 26248

Creation date: 2024-06-27T19:26:36.149127
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_079T03_9000003790_26248cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26248cztM0_level2_quad_clean.evt
Size (bytes)539,830,08093,818,880
Size514.8 MB 89.5 MB
Events in quadrant A3,648,118582,463
Events in quadrant B3,618,900599,711
Events in quadrant C4,487,570578,889
Events in quadrant D4,089,199562,233

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157150
B0154920
C0180110
D0172440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74302162.907133%
B74312253.027856%
C74313244.360113%
D74313614.858027%

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 7635 7431 23 23 0.30% 0.31%
B 7636 7432 15 15 0.20% 0.20%
C 7636 7432 74 74 0.97% 1.00%
D 7636 7432 166 166 2.17% 2.23%

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 0 13 184841 1014.52 896 875 181.3
A 13 254 13631 70.35 896 875 181.3
A 3 137 8564 42.4 896 875 181.3
B 5 172 58911 335.34 893 870 173.1
B 0 230 36951 208.47 893 870 173.1
B 12 111 21206 117.5 893 870 173.1
C 3 233 985047 4919.26 853 856 200.1
C 14 238 136228 676.63 853 856 200.1
C 2 16 24446 117.91 853 856 200.1
D 1 52 765837 3718.64 860 837 205.7
D 2 234 35855 170.22 860 837 205.7
D 12 233 24684 115.92 860 837 205.7

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