ASTROSAT CZTI

Data Quality Report

Orbit 45585

Creation date: 2024-06-27T23:13:55.259653
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_071T04_9000006110_45585cztM0_level2.fits modeM0/AS1A13_071T04_9000006110_45585cztM0_level2_quad_clean.evt
Size (bytes)363,827,52070,142,400
Size347.0 MB 66.9 MB
Events in quadrant A3,963,885470,589
Events in quadrant B3,307,604458,074
Events in quadrant C2,393,903462,120
Events in quadrant D3,456,465420,414

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015678856
B0140131261
C011223941
D013957651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0975
B0977
C0974
D0964

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A44471804.047673%
B44394259.574228%
C44451312.947132%
D44471844.137621%

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 4946 4521 20 20 0.40% 0.44%
B 4976 4497 218 218 4.38% 4.85%
C 4947 4498 61 61 1.23% 1.36%
D 4977 4515 70 70 1.41% 1.55%

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 1744052 16386.75 509 498 106.4
A 13 210 134159 1256.21 509 498 106.4
A 2 79 93528 874.34 509 498 106.4
B 15 201 1130012 11291.1 500 484 100.0
B 5 172 104359 1038.37 500 484 100.0
B 0 199 26643 261.49 500 484 100.0
C 14 254 382781 3234.54 497 499 118.2
C 9 237 54794 459.4 497 499 118.2
C 9 221 15342 125.59 497 499 118.2
D 11 241 978334 7653.75 498 481 127.8
D 11 224 234514 1831.8 498 481 127.8
D 1 52 170528 1330.97 498 481 127.8

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