ASTROSAT CZTI

Data Quality Report

Orbit 25353

Creation date: 2024-06-27T19:16:41.590599
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/AS1A09_059T01_9000003706_25353cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25353cztM0_level2_quad_clean.evt
Size (bytes)941,662,080185,927,040
Size898.0 MB 177.3 MB
Events in quadrant A6,450,2361,203,617
Events in quadrant B6,510,8231,210,571
Events in quadrant C6,855,1111,158,050
Events in quadrant D7,793,1911,131,004

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280730
B0280930
C0291060
D0326250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13434640.476403%
B13435690.513584%
C134341821.354771%
D134343042.262915%

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 15044 13437 13 13 0.09% 0.10%
B 15045 13438 4 4 0.03% 0.03%
C 15044 13437 12 12 0.08% 0.09%
D 15044 13436 227 227 1.51% 1.69%

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 6 16 200810 617.32 1610 1575 322.7
A 4 2 41135 122.57 1610 1575 322.7
A 13 254 21581 61.99 1610 1575 322.7
B 3 112 96875 313.04 1598 1556 304.5
B 0 229 59932 191.71 1598 1556 304.5
B 0 190 51490 163.99 1598 1556 304.5
C 3 233 511492 1415.53 1546 1553 360.2
C 14 238 247661 683.17 1546 1553 360.2
C 9 54 51714 139.24 1546 1553 360.2
D 12 233 682651 1805.85 1556 1511 377.2
D 8 195 576667 1524.86 1556 1511 377.2
D 1 52 456422 1206.06 1556 1511 377.2

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