ASTROSAT CZTI

Data Quality Report

Orbit 44890

Creation date: 2024-06-27T23:07:41.104140
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_017T02_9000006032_44890cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44890cztM0_level2_quad_clean.evt
Size (bytes)494,735,04099,901,440
Size471.8 MB 95.3 MB
Events in quadrant A4,812,714673,868
Events in quadrant B3,174,352697,388
Events in quadrant C2,806,039676,060
Events in quadrant D7,037,829543,576

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191901
B0135221
C0127671
D0253101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62181151.849469%
B62181211.945963%
C6219570.916546%
D621999415.983277%

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 7198 6219 0 0 0.00% 0.00%
B 7198 6219 40 40 0.56% 0.64%
C 7199 6220 9 9 0.13% 0.14%
D 7199 6220 765 765 10.63% 12.30%

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 2016433 13844.25 704 688 145.6
A 10 255 38817 261.87 704 688 145.6
A 10 248 18585 122.92 704 688 145.6
B 0 168 197789 1395.21 703 680 141.3
B 0 183 60635 424.38 703 680 141.3
B 5 255 35666 247.64 703 680 141.3
C 14 254 45280 273.16 695 701 163.2
C 9 54 19641 116.05 695 701 163.2
C 1 3 12273 70.91 695 701 163.2
D 1 52 965918 5883.22 650 629 164.1
D 2 249 926451 5642.67 650 629 164.1
D 13 174 920930 5609.03 650 629 164.1

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