ASTROSAT CZTI

Data Quality Report

Orbit 42052

Creation date: 2024-06-27T22:36:12.681135
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_037T03_9000005738_42052cztM0_level2.fits modeM0/AS1A12_037T03_9000005738_42052cztM0_level2_quad_clean.evt
Size (bytes)325,886,40087,151,680
Size310.8 MB 83.1 MB
Events in quadrant A3,443,974587,296
Events in quadrant B2,370,324609,166
Events in quadrant C2,427,054573,527
Events in quadrant D3,419,039506,464

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136433
B0105662
C0104142
D0138612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5171380.734868%
B5171100.193386%
C517120.038677%
D51712625.066718%

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 7055 5172 15 15 0.21% 0.29%
B 7055 5172 7 7 0.10% 0.14%
C 7055 5172 0 0 0.00% 0.00%
D 7055 5172 225 225 3.19% 4.35%

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 15 223 607881 5158.61 576 566 117.7
A 10 83 528577 4485.0 576 566 117.7
A 12 189 48100 403.76 576 566 117.7
B 3 112 40443 354.09 579 562 112.6
B 5 255 27059 235.26 579 562 112.6
B 0 229 16138 138.29 579 562 112.6
C 15 214 214502 1611.73 564 567 132.7
C 12 249 5334 35.91 564 567 132.7
C 0 207 5276 35.48 564 567 132.7
D 1 52 568673 4217.49 545 530 134.7
D 13 249 450784 3342.36 545 530 134.7
D 12 6 255992 1896.37 545 530 134.7

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