ASTROSAT CZTI

Data Quality Report

Orbit 00241

Creation date: 2024-06-27T13:58:19.230361
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/AS1P01_122T01_9000000026_00241cztM0_level2.evt modeM0/AS1P01_122T01_9000000026_00241cztM0_level2_quad_clean.evt
Size (bytes)840,792,96046,535,040
Size801.8 MB 44.4 MB
Events in quadrant A7,045,059261,223
Events in quadrant B6,087,625266,508
Events in quadrant C5,556,927268,128
Events in quadrant D6,440,589260,673

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01044
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024796335
B021968332
C020342281
D023056344

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50171052.092884%
B5015230.458624%
C502610.019897%
D5017450.896950%

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 6754 5033 552 552 8.17% 10.97%
B 6751 5034 112 112 1.66% 2.22%
C 6779 5045 51 51 0.75% 1.01%
D 6757 5034 249 249 3.69% 4.95%

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 15 127 982431 2822.62 1564 1552 347.5
A 15 250 8934 21.24 1564 1552 347.5
A 13 17 5394 11.05 1564 1552 347.5
B 10 244 68601 183.08 1555 1568 366.1
B 8 54 26435 67.92 1555 1568 366.1
B 15 219 22424 56.96 1555 1568 366.1
C 9 51 30374 73.97 1393 1443 391.1
C 1 1 21561 51.44 1393 1443 391.1
C 9 35 19802 46.94 1393 1443 391.1
D 1 4 653635 1538.5 1347 1399 423.9
D 10 154 367902 864.51 1347 1399 423.9
D 12 7 137600 321.27 1347 1399 423.9

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