ASTROSAT CZTI

Data Quality Report

Orbit 42958

Creation date: 2024-06-27T22:46:16.965361
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/AS1T05_143T01_9000005834_42958cztM0_level2.fits modeM0/AS1T05_143T01_9000005834_42958cztM0_level2_quad_clean.evt
Size (bytes)354,199,68091,177,920
Size337.8 MB 87.0 MB
Events in quadrant A3,240,229609,788
Events in quadrant B2,657,014629,662
Events in quadrant C2,947,063596,007
Events in quadrant D3,827,923531,088

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132232
B0119592
C0124272
D0153882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5638851.507627%
B5639150.266005%
C5639611.081752%
D56393295.834368%

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 8624 5640 56 56 0.65% 0.99%
B 8625 5640 5 5 0.06% 0.09%
C 8625 5640 64 64 0.74% 1.13%
D 8625 5640 351 351 4.07% 6.22%

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 580872 4625.48 609 598 125.5
A 15 237 263053 2092.08 609 598 125.5
A 13 6 14874 113.8 609 598 125.5
B 4 171 104565 878.04 609 593 118.4
B 4 81 81269 681.31 609 593 118.4
B 4 249 42017 349.82 609 593 118.4
C 12 2 270175 1930.11 598 600 139.7
C 15 214 224228 1601.14 598 600 139.7
C 5 250 87291 620.69 598 600 139.7
D 12 6 719824 5083.2 584 568 141.5
D 13 249 361341 2549.69 584 568 141.5
D 12 2 118581 834.03 584 568 141.5

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