ASTROSAT CZTI

Data Quality Report

Orbit 37507

Creation date: 2024-06-27T21:40:54.791298
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_030T02_9000005328_37507cztM0_level2.evt modeM0/AS1A11_030T02_9000005328_37507cztM0_level2_quad_clean.evt
Size (bytes)1,208,102,400221,866,560
Size1.1 GB 211.6 MB
Events in quadrant A7,146,3691,504,285
Events in quadrant B8,618,6361,499,997
Events in quadrant C8,243,4011,488,486
Events in quadrant D11,713,9671,339,461

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291504
B0337863
C0320863
D0438253

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12847250.194598%
B128476394.973924%
C128473772.934537%
D128479907.706079%

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 19093 12850 16 16 0.08% 0.12%
B 19093 12850 530 530 2.78% 4.12%
C 19093 12850 335 335 1.75% 2.61%
D 19093 12850 1004 1004 5.26% 7.81%

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 562963 1830.94 1533 1507 306.6
A 15 222 507838 1651.17 1533 1507 306.6
A 13 6 55753 176.9 1533 1507 306.6
B 5 172 1612362 5718.93 1507 1470 281.7
B 5 255 728928 2582.6 1507 1470 281.7
B 0 213 77035 268.27 1507 1470 281.7
C 14 254 1678096 4834.32 1504 1519 346.8
C 15 214 534889 1537.94 1504 1519 346.8
C 0 10 137008 390.68 1504 1519 346.8
D 1 52 2422647 6874.24 1450 1415 352.2
D 13 249 1666603 4727.72 1450 1415 352.2
D 2 249 1321684 3748.44 1450 1415 352.2

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