ASTROSAT CZTI

Data Quality Report

Orbit 20191229_A08_004T03_9000003400_level2

Creation date: 2025-12-07T23:58:52.035286
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/AS1A08_004T03_9000003400cztM0_level2.fits modeM0/AS1A08_004T03_9000003400cztM0_level2_quad_clean.evt
Size (bytes)999,855,360876,395,520
Size953.5 MB 835.8 MB
Events in quadrant A6,168,9485,135,999
Events in quadrant B5,955,1875,151,488
Events in quadrant C5,988,7804,854,130
Events in quadrant D5,169,3144,401,963

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02114250
B02170110
C02188930
D02667050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020960
B020940
C020880
D020920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01650
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10204611741.150462%
B10208117251.689835%
C10205623022.255624%
D10201734583.389631%

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 127549 102171 0 0 0.00% 0.00%
B 127549 102200 0 0 0.00% 0.00%
C 127549 102172 0 0 0.00% 0.00%
D 127549 102129 0 0 0.00% 0.00%

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 0 29 5749 10.77 1604 1500 394.7
A 7 110 4919 8.66 1604 1500 394.7
A 9 19 4663 8.01 1604 1500 394.7
B 2 9 4764 10.59 1571 1497 308.5
B 3 80 4031 8.21 1571 1497 308.5
B 2 8 3971 8.02 1571 1497 308.5
C 1 80 4488 7.41 1581 1478 406.1
C 1 81 4444 7.3 1581 1478 406.1
C 12 241 4297 6.94 1581 1478 406.1
D 3 14 3834 6.27 1481 1348 396.6
D 7 3 3611 5.71 1481 1348 396.6
D 13 238 3595 5.67 1481 1348 396.6

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