ASTROSAT CZTI

Data Quality Report

Orbit 01072

Creation date: 2024-06-27T14:07:01.079578
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_998T02_9000000190_01072cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01072cztM0_level2_quad_clean.evt
Size (bytes)1,845,276,480197,354,880
Size1.7 GB 188.2 MB
Events in quadrant A13,433,7031,337,708
Events in quadrant B14,299,8641,339,347
Events in quadrant C13,806,3101,278,929
Events in quadrant D13,601,7061,243,472

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0479022
B0504802
C0490142
D0484914

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A112481391.235775%
B112481701.511380%
C112481471.306899%
D112475214.632346%

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 13533 11250 463 463 3.42% 4.12%
B 13533 11250 668 668 4.94% 5.94%
C 13533 11250 461 461 3.41% 4.10%
D 13532 11249 844 844 6.24% 7.50%

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 15 233 76763 88.19 3479 3491 830.9
A 0 253 13929 12.56 3479 3491 830.9
A 11 79 13548 12.1 3479 3491 830.9
B 5 191 341963 398.22 3593 3603 849.7
B 15 22 176060 202.96 3593 3603 849.7
B 5 249 54550 59.96 3593 3603 849.7
C 15 241 579068 635.85 3261 3367 905.4
C 9 52 364577 398.95 3261 3367 905.4
C 3 79 69616 73.17 3261 3367 905.4
D 13 73 66811 60.42 3341 3346 1050.4
D 10 102 65033 58.73 3341 3346 1050.4
D 2 216 63318 57.09 3341 3346 1050.4

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