ASTROSAT CZTI

Data Quality Report

Orbit 36385

Creation date: 2022-06-21T13:44:26.416424
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/AS1A11_097T24_9000005196_36385cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36385cztM0_level2_quad_clean.evt
Size (bytes)1,417,291,200175,694,400
Size1.3 GB 167.6 MB
Events in quadrant A8,131,0861,096,978
Events in quadrant B10,528,4271,068,595
Events in quadrant C12,036,4201,028,522
Events in quadrant D11,123,503997,634

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03340
B03340
C03340
D03340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0342115
B0421194
C0461374
D0441084

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16365240.146654%
B163657854.796822%
C1636511046.746104%
D163657584.631836%

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 21886 16369 7 7 0.03% 0.04%
B 21886 16369 554 554 2.53% 3.38%
C 21886 16369 1078 1078 4.93% 6.59%
D 21886 16369 686 686 3.13% 4.19%

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 458427 1193.09 1905 1869 382.7
A 15 223 262773 681.8 1905 1869 382.7
A 13 254 28839 70.48 1905 1869 382.7
B 5 172 2132803 6007.01 1850 1798 354.8
B 5 255 368963 1034.99 1850 1798 354.8
B 4 171 351261 985.09 1850 1798 354.8
C 4 254 4029627 9720.21 1788 1796 414.4
C 15 214 678403 1632.83 1788 1796 414.4
C 0 10 294260 705.79 1788 1796 414.4
D 12 6 2063964 4683.52 1808 1756 440.3
D 13 249 613882 1390.21 1808 1756 440.3
D 2 249 466862 1056.31 1808 1756 440.3

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