ASTROSAT CZTI

Data Quality Report

Orbit 40855

Creation date: 2024-06-27T22:21:23.450367
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_104T02_9000005572_40855cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40855cztM0_level2_quad_clean.evt
Size (bytes)467,161,92084,637,440
Size445.5 MB 80.7 MB
Events in quadrant A3,009,766585,076
Events in quadrant B2,901,115591,142
Events in quadrant C4,446,532528,801
Events in quadrant D6,514,853478,617

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121453
B0124222
C0167092
D0231402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5415200.369344%
B54151602.954755%
C54155379.916898%
D541576414.108957%

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 7118 5416 10 10 0.14% 0.18%
B 7118 5416 88 88 1.24% 1.62%
C 7118 5416 441 441 6.20% 8.14%
D 7118 5416 698 698 9.81% 12.89%

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 514148 4211.18 592 579 122.0
A 13 248 103518 844.08 592 579 122.0
A 12 189 52787 428.1 592 579 122.0
B 4 171 546199 4813.39 581 565 113.4
B 0 190 38392 333.7 581 565 113.4
B 5 255 24174 208.27 581 565 113.4
C 14 254 1897943 14678.83 550 554 129.3
C 15 214 222587 1717.72 550 554 129.3
C 0 10 93801 721.39 550 554 129.3
D 13 249 2158815 15999.44 551 536 134.9
D 12 79 1926570 14277.8 551 536 134.9
D 2 249 166144 1227.66 551 536 134.9

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