ASTROSAT CZTI

Data Quality Report

Orbit 46234

Creation date: 2024-06-27T23:20:38.680827
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_065T07_9000006188_46234cztM0_level2.fits modeM0/AS1A13_065T07_9000006188_46234cztM0_level2_quad_clean.evt
Size (bytes)622,707,840132,837,120
Size593.9 MB 126.7 MB
Events in quadrant A7,274,194880,408
Events in quadrant B5,149,832910,054
Events in quadrant C4,014,844876,661
Events in quadrant D5,957,484768,220

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266631
B0208021
C0182121
D0237331

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84413053.613316%
B84413353.968724%
C84411471.741500%
D84415586.610591%

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 8496 8441 1 1 0.01% 0.01%
B 8496 8441 15 15 0.18% 0.18%
C 8496 8441 16 16 0.19% 0.19%
D 8496 8441 353 353 4.15% 4.18%

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 3375872 16292.86 980 957 207.1
A 0 247 79437 378.87 980 957 207.1
A 13 254 15214 68.83 980 957 207.1
B 3 112 1213913 6160.91 979 947 196.9
B 12 111 25936 126.92 979 947 196.9
B 5 32 24144 117.82 979 947 196.9
C 12 2 148058 636.59 974 977 231.0
C 1 3 41519 175.47 974 977 231.0
C 11 16 15766 64.01 974 977 231.0
D 1 52 1280004 5336.92 949 920 239.7
D 5 33 391231 1628.56 949 920 239.7
D 2 249 235975 980.76 949 920 239.7

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