ASTROSAT CZTI

Data Quality Report

Orbit 45218

Creation date: 2024-06-27T23:10:49.659498
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/AS1A13_049T07_9000006056_45218cztM0_level2.fits modeM0/AS1A13_049T07_9000006056_45218cztM0_level2_quad_clean.evt
Size (bytes)685,085,760129,795,840
Size653.3 MB 123.8 MB
Events in quadrant A6,882,373876,414
Events in quadrant B4,372,328906,581
Events in quadrant C4,289,438885,153
Events in quadrant D9,164,523678,036

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262600
B0186900
C0188420
D0329470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83992863.405167%
B83992482.952732%
C84001882.238095%
D8400161319.202381%

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 8399 8399 28 28 0.33% 0.33%
B 8399 8399 45 45 0.54% 0.54%
C 8400 8400 67 67 0.80% 0.80%
D 8400 8400 1408 1408 16.76% 16.76%

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 2904234 14136.87 975 950 205.4
A 13 248 121317 586.1 975 950 205.4
A 15 174 37534 178.14 975 950 205.4
B 3 112 205715 1060.78 972 943 193.0
B 5 172 82510 422.54 972 943 193.0
B 4 171 69238 353.79 972 943 193.0
C 1 3 244482 1082.88 957 960 224.9
C 12 2 104216 459.16 957 960 224.9
C 15 208 81048 356.13 957 960 224.9
D 13 249 2189540 9486.09 904 876 230.7
D 4 232 1673449 7249.25 904 876 230.7
D 2 249 511092 2211.37 904 876 230.7

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