ASTROSAT CZTI

Data Quality Report

Orbit 34825

Creation date: 2022-03-08T03:26:40.033622
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_005T01_9000004992_34825cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34825cztM0_level2_quad_clean.evt
Size (bytes)783,743,04082,316,160
Size747.4 MB 78.5 MB
Events in quadrant A3,695,212639,760
Events in quadrant B13,401,498250,913
Events in quadrant C2,870,532630,211
Events in quadrant D3,414,460602,731

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146043
B0434002
C0116202
D0137932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52401102.099237%
B52405240100.000000%
C5240711.354962%
D5240671.278626%

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 7093 5241 64 64 0.90% 1.22%
B 7092 5239 5155 5155 72.69% 98.40%
C 7093 5241 55 55 0.78% 1.05%
D 7093 5241 60 60 0.85% 1.14%

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 15 169 1215088 9940.47 613 602 122.2
A 10 83 52554 425.22 613 602 122.2
A 13 6 19629 155.73 613 602 122.2
B 5 14 4018173 77651.25 266 260 51.7
B 5 31 3975488 76826.31 266 260 51.7
B 5 15 3965630 76635.79 266 260 51.7
C 15 214 239094 1754.07 592 598 136.0
C 0 10 205798 1509.19 592 598 136.0
C 14 67 85965 627.85 592 598 136.0
D 8 195 546995 3839.67 590 575 142.3
D 13 249 107642 752.36 590 575 142.3
D 12 6 76136 530.96 590 575 142.3

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