ASTROSAT CZTI

Data Quality Report

Orbit 40653

Creation date: 2024-06-27T22:18:45.240990
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/AS1A12_029T01_9000005556_40653cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40653cztM0_level2_quad_clean.evt
Size (bytes)335,318,40095,086,080
Size319.8 MB 90.7 MB
Events in quadrant A3,043,096649,681
Events in quadrant B3,226,132659,657
Events in quadrant C2,875,221625,332
Events in quadrant D2,806,267530,964

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126053
B0134972
C0122382
D0124552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5919130.219632%
B59191001.689475%
C5919220.371684%
D59195499.275215%

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 9145 5921 3 3 0.03% 0.05%
B 9145 5921 53 53 0.58% 0.90%
C 9145 5921 15 15 0.16% 0.25%
D 9145 5921 21 21 0.23% 0.35%

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 502439 3719.61 655 641 134.9
A 13 254 7536 51.11 655 641 134.9
A 3 137 7445 50.44 655 641 134.9
B 0 229 475468 3723.12 647 629 127.5
B 0 190 182997 1429.91 647 629 127.5
B 12 111 16224 122.28 647 629 127.5
C 15 214 259956 1735.67 636 638 149.4
C 14 254 56319 372.68 636 638 149.4
C 10 20 43282 285.42 636 638 149.4
D 12 191 184546 1231.93 603 587 149.3
D 2 250 136853 912.54 603 587 149.3
D 5 51 104780 697.76 603 587 149.3

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