ASTROSAT CZTI

Data Quality Report

Orbit 46878

Creation date: 2024-06-27T23:28:51.138440
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_053T01_9000006274_46878cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46878cztM0_level2_quad_clean.evt
Size (bytes)467,144,640102,087,360
Size445.5 MB 97.4 MB
Events in quadrant A5,919,736677,465
Events in quadrant B3,988,682695,006
Events in quadrant C2,820,138674,283
Events in quadrant D4,077,048606,595

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212641
B0160471
C0131181
D0165571

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62691772.823417%
B62691402.233211%
C6270701.116427%
D62703255.183413%

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 7324 6269 23 23 0.31% 0.37%
B 7324 6269 57 57 0.78% 0.91%
C 7325 6271 36 36 0.49% 0.57%
D 7325 6270 242 242 3.30% 3.86%

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 3126696 21664.3 694 679 144.3
A 13 248 66708 457.6 694 679 144.3
A 9 191 16899 112.41 694 679 144.3
B 3 112 1047462 7729.55 686 663 135.4
B 0 198 69143 505.66 686 663 135.4
B 15 36 56833 414.76 686 663 135.4
C 14 254 146847 918.12 677 681 159.2
C 1 241 22139 134.79 677 681 159.2
C 3 233 7014 39.78 677 681 159.2
D 2 249 683396 4072.24 675 654 167.7
D 13 249 405620 2415.43 675 654 167.7
D 1 52 184026 1093.73 675 654 167.7

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