ASTROSAT CZTI

Data Quality Report

Orbit 42319

Creation date: 2024-06-27T22:38:12.133852
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/AS1P01_999T99_9000005772_42319cztM0_level2.fits modeM0/AS1P01_999T99_9000005772_42319cztM0_level2_quad_clean.evt
Size (bytes)330,292,80091,105,920
Size315.0 MB 86.9 MB
Events in quadrant A3,622,833599,818
Events in quadrant B2,503,089613,482
Events in quadrant C2,576,995599,179
Events in quadrant D3,087,215554,113

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144362
B0116423
C0114472
D0132932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5600731.303571%
B5599320.571531%
C5599220.392927%
D55991122.000357%

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 7061 5601 44 44 0.62% 0.79%
B 7060 5600 16 16 0.23% 0.29%
C 7060 5600 19 19 0.27% 0.34%
D 7060 5600 96 96 1.36% 1.71%

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 754584 6274.87 589 577 120.2
A 10 83 568401 4725.45 589 577 120.2
A 13 248 11416 90.2 589 577 120.2
B 3 112 90608 799.4 586 570 112.6
B 15 35 29855 260.0 586 570 112.6
B 0 245 26798 232.86 586 570 112.6
C 15 214 235111 1741.76 580 584 134.6
C 9 54 55494 407.8 580 584 134.6
C 12 249 13647 97.01 580 584 134.6
D 1 52 216046 1542.42 575 558 139.7
D 13 249 170108 1213.6 575 558 139.7
D 12 6 168638 1203.08 575 558 139.7

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