ASTROSAT CZTI

Data Quality Report

Orbit 37572

Creation date: 2024-06-27T21:41:41.200350
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/AS1C07_001T11_9000005336_37572cztM0_level2.evt modeM0/AS1C07_001T11_9000005336_37572cztM0_level2_quad_clean.evt
Size (bytes)207,345,60035,447,040
Size197.7 MB 33.8 MB
Events in quadrant A1,051,990240,581
Events in quadrant B1,325,988243,846
Events in quadrant C983,513243,010
Events in quadrant D2,773,354193,339

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044011
B053571
C043121
D096981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A209580.381862%
B2095703.341289%
C209540.190931%
D209566031.503580%

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 2095 2095 1 1 0.05% 0.05%
B 2095 2095 54 54 2.58% 2.58%
C 2095 2095 2 2 0.10% 0.10%
D 2095 2095 650 650 31.03% 31.03%

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 136077 2849.09 229 225 47.7
A 12 189 10540 216.33 229 225 47.7
A 13 6 10428 213.98 229 225 47.7
B 5 172 175266 3862.01 224 217 45.3
B 5 200 87142 1917.78 224 217 45.3
B 5 255 68382 1503.89 224 217 45.3
C 15 214 91902 1775.02 217 217 51.7
C 0 10 25078 481.31 217 217 51.7
C 14 254 14757 281.49 217 217 51.7
D 1 47 980382 20190.71 190 184 48.5
D 13 171 498781 10270.4 190 184 48.5
D 13 249 180378 3711.74 190 184 48.5

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