ASTROSAT CZTI

Data Quality Report

Orbit 40880

Creation date: 2024-06-27T22:21:41.572366
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_097T01_9000005574_40880cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40880cztM0_level2_quad_clean.evt
Size (bytes)341,429,76087,932,160
Size325.6 MB 83.9 MB
Events in quadrant A2,801,810598,791
Events in quadrant B3,339,847606,417
Events in quadrant C2,542,379590,352
Events in quadrant D3,564,483516,362

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113373
B0132552
C0104952
D0138562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5010140.279441%
B50102254.491018%
C5010280.558882%
D50102274.530938%

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 7042 5011 9 9 0.13% 0.18%
B 7042 5011 153 153 2.17% 3.05%
C 7042 5011 25 25 0.36% 0.50%
D 7042 5010 184 184 2.61% 3.67%

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 504738 4277.23 573 563 117.9
A 13 248 34313 286.32 573 563 117.9
A 12 189 19310 159.04 573 563 117.9
B 4 171 640415 5830.74 568 552 109.7
B 5 255 262694 2388.77 568 552 109.7
B 0 229 126470 1147.43 568 552 109.7
C 15 214 213020 1605.47 563 568 132.3
C 0 10 104524 785.58 563 568 132.3
C 10 70 14928 108.52 563 568 132.3
D 12 79 639061 4768.65 543 527 133.9
D 2 249 530828 3960.36 543 527 133.9
D 13 249 132875 988.39 543 527 133.9

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