ASTROSAT CZTI

Data Quality Report

Orbit 37857

Creation date: 2024-06-27T21:45:22.793452
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/AS1C07_001T12_9000005352_37857cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37857cztM0_level2_quad_clean.evt
Size (bytes)454,521,60080,035,200
Size433.5 MB 76.3 MB
Events in quadrant A2,786,575528,906
Events in quadrant B3,087,147525,145
Events in quadrant C2,825,196512,609
Events in quadrant D4,693,689472,760

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117323
B0128782
C0117062
D0176902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5491150.273174%
B54911212.203606%
C5491510.928793%
D54915299.633946%

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 7224 5492 6 6 0.08% 0.11%
B 7224 5492 75 75 1.04% 1.37%
C 7224 5492 49 49 0.68% 0.89%
D 7224 5492 438 438 6.06% 7.98%

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 366671 3059.7 602 590 119.6
A 15 222 39071 321.62 602 590 119.6
A 13 6 19747 160.11 602 590 119.6
B 5 172 368636 3256.33 595 580 113.0
B 0 229 170430 1502.72 595 580 113.0
B 4 171 41305 360.31 595 580 113.0
C 15 214 230493 1689.8 585 587 136.1
C 0 10 196710 1441.49 585 587 136.1
C 14 67 63411 461.75 585 587 136.1
D 2 249 1949770 14033.91 570 553 138.9
D 1 52 154577 1108.94 570 553 138.9
D 2 250 125467 899.35 570 553 138.9

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