ASTROSAT CZTI

Data Quality Report

Orbit 06648

Creation date: 2024-06-27T15:09:51.332671
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/AS1A02_189T01_9000000902_06648cztM0_level2.evt modeM0/AS1A02_189T01_9000000902_06648cztM0_level2_quad_clean.evt
Size (bytes)478,255,68095,656,320
Size456.1 MB 91.2 MB
Events in quadrant A3,369,196612,121
Events in quadrant B3,117,294626,933
Events in quadrant C2,840,379618,468
Events in quadrant D4,705,402575,953

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141531
B0138881
C0135611
D0189421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66462123.189889%
B66461552.332230%
C6646691.038218%
D66466199.313873%

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 6736 6649 0 0 0.00% 0.00%
B 6736 6649 1 1 0.01% 0.02%
C 6736 6649 0 0 0.00% 0.00%
D 6736 6649 416 416 6.18% 6.26%

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 8 15 340786 2211.78 748 732 153.7
A 15 239 120269 777.49 748 732 153.7
A 13 248 18622 116.36 748 732 153.7
B 4 81 54517 371.63 758 741 144.7
B 4 80 40922 277.68 758 741 144.7
B 0 198 33492 226.33 758 741 144.7
C 13 61 5819 30.33 725 727 167.9
C 7 159 3754 18.03 725 727 167.9
C 8 128 3587 17.04 725 727 167.9
D 2 33 1687344 9656.11 703 676 174.7
D 8 195 100381 570.81 703 676 174.7
D 2 63 71605 406.07 703 676 174.7

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