ASTROSAT CZTI

Data Quality Report

Orbit 42927

Creation date: 2024-06-27T22:45:53.910876
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_9000005830_42927cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42927cztM0_level2_quad_clean.evt
Size (bytes)414,648,00083,283,840
Size395.4 MB 79.4 MB
Events in quadrant A3,188,735581,715
Events in quadrant B5,853,254477,613
Events in quadrant C2,445,817571,392
Events in quadrant D3,441,917514,419

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130412
B0212712
C0108952
D0142732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5384520.965825%
B5384133324.758544%
C538470.130015%
D53832013.733977%

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 7027 5385 40 40 0.57% 0.74%
B 7027 5385 1065 1065 15.16% 19.78%
C 7027 5385 1 1 0.01% 0.02%
D 7026 5384 217 217 3.09% 4.03%

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 568140 4886.45 566 556 116.2
A 15 222 405619 3487.27 566 556 116.2
A 5 168 19285 161.24 566 556 116.2
B 4 81 3723874 38202.17 505 492 97.5
B 0 229 44445 450.96 505 492 97.5
B 5 172 32796 331.44 505 492 97.5
C 15 214 220467 1686.67 557 560 130.4
C 12 249 23132 173.13 557 560 130.4
C 15 143 21703 162.17 557 560 130.4
D 12 6 505697 3761.61 544 527 134.3
D 2 249 273227 2030.59 544 527 134.3
D 12 233 170948 1268.99 544 527 134.3

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