ASTROSAT CZTI

Data Quality Report

Orbit 34233

Creation date: 2022-01-27T03:48:07.139857
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_003T01_9000004886_34233cztM0_level2.evt modeM0/AS1T05_003T01_9000004886_34233cztM0_level2_quad_clean.evt
Size (bytes)450,633,60055,117,440
Size429.8 MB 52.6 MB
Events in quadrant A2,651,710323,778
Events in quadrant B3,052,360337,756
Events in quadrant C3,539,336325,221
Events in quadrant D4,042,551308,720

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109713
B0122822
C0137872
D0155632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A532290.169109%
B5322591.108606%
C53221532.874859%
D53221482.780909%

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 7325 5323 5 5 0.07% 0.09%
B 7325 5323 32 32 0.44% 0.60%
C 7325 5323 107 107 1.46% 2.01%
D 7325 5323 118 118 1.61% 2.22%

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 9 143 33855 247.67 666 654 134.1
A 10 83 23118 167.57 666 654 134.1
A 13 6 15964 114.21 666 654 134.1
B 5 172 164830 1295.25 675 658 126.7
B 0 183 81101 634.66 675 658 126.7
B 0 189 50743 395.15 675 658 126.7
C 0 10 306003 2031.66 659 667 150.3
C 15 214 229240 1520.89 659 667 150.3
C 0 207 159724 1058.34 659 667 150.3
D 8 195 870054 5493.17 653 638 158.3
D 12 6 337092 2125.79 653 638 158.3
D 1 52 105027 659.55 653 638 158.3

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