ASTROSAT CZTI

Data Quality Report

Orbit 43674

Creation date: 2024-06-27T22:54:22.079937
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/AS1A12_018T01_9000005896_43674cztM0_level2.fits modeM0/AS1A12_018T01_9000005896_43674cztM0_level2_quad_clean.evt
Size (bytes)176,045,76024,863,040
Size167.9 MB 23.7 MB
Events in quadrant A2,108,635172,749
Events in quadrant B780,114182,439
Events in quadrant C2,469,424140,527
Events in quadrant D1,048,090153,025

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072551
B031801
C083251
D040601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A139321815.649677%
B1393221.579325%
C139363645.656856%
D1393785.599426%

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 1393 1393 40 40 2.87% 2.87%
B 1393 1393 0 0 0.00% 0.00%
C 1393 1393 630 630 45.23% 45.23%
D 1393 1393 47 47 3.37% 3.37%

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 15 222 1139443 31340.33 170 166 36.4
A 10 83 242986 6679.73 170 166 36.4
A 0 50 19287 526.0 170 166 36.4
B 0 230 28231 774.65 175 170 36.2
B 4 171 24129 661.41 175 170 36.2
B 4 206 20436 559.46 175 170 36.2
C 15 157 1009001 29680.51 138 138 34.0
C 15 142 873675 25699.25 138 138 34.0
C 15 173 14018 408.35 138 138 34.0
D 2 136 155120 3670.33 165 160 42.2
D 13 249 67613 1597.67 165 160 42.2
D 14 226 44667 1054.18 165 160 42.2

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