ASTROSAT CZTI

Data Quality Report

Orbit 41929

Creation date: 2024-06-27T22:34:38.052257
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_099T03_9000005720_41929cztM0_level2.fits modeM0/AS1A12_099T03_9000005720_41929cztM0_level2_quad_clean.evt
Size (bytes)706,582,08076,311,360
Size673.8 MB 72.8 MB
Events in quadrant A5,015,951563,132
Events in quadrant B3,020,125625,893
Events in quadrant C3,873,949578,749
Events in quadrant D13,799,107140,638

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186021
B0128001
C0150511
D0447661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A575162510.867675%
B5752450.782337%
C57522955.128651%
D5752457279.485396%

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 7064 5752 568 568 8.04% 9.87%
B 7065 5753 37 37 0.52% 0.64%
C 7065 5753 290 290 4.10% 5.04%
D 7065 5753 4550 4550 64.40% 79.09%

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 14 24 2123919 17257.84 600 588 123.0
A 10 83 492725 3999.95 600 588 123.0
A 2 79 56776 456.68 600 588 123.0
B 0 229 228567 1902.84 613 596 119.8
B 0 156 209960 1747.53 613 596 119.8
B 5 255 65078 538.22 613 596 119.8
C 4 254 857045 6212.86 587 590 137.9
C 0 10 453556 3285.89 587 590 137.9
C 15 214 226930 1641.91 587 590 137.9
D 12 79 12266388 139946.51 355 345 87.6
D 13 249 78700 893.97 355 345 87.6
D 5 222 51075 578.79 355 345 87.6

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