ASTROSAT CZTI

Data Quality Report

Orbit 42526

Creation date: 2024-06-27T22:41:12.676434
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/AS1A07_041T01_9000005808_42526cztM0_level2.fits modeM0/AS1A07_041T01_9000005808_42526cztM0_level2_quad_clean.evt
Size (bytes)965,617,920243,541,440
Size920.9 MB 232.3 MB
Events in quadrant A7,840,6611,640,468
Events in quadrant B6,826,8191,678,385
Events in quadrant C12,848,8441,499,631
Events in quadrant D7,025,5321,484,785

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330614
B0317174
C0485174
D0328914

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15514320.206265%
B15514450.290061%
C1551312137.819248%
D15513870.560820%

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 19692 15517 7 7 0.04% 0.05%
B 19692 15517 27 27 0.14% 0.17%
C 19691 15516 1031 1031 5.24% 6.64%
D 19691 15516 74 74 0.38% 0.48%

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 1345809 3963.83 1655 1621 339.1
A 7 3 36065 101.57 1655 1621 339.1
A 13 248 32638 91.46 1655 1621 339.1
B 0 245 185387 573.83 1646 1596 320.3
B 5 172 120744 372.0 1646 1596 320.3
B 5 255 61930 188.37 1646 1596 320.3
C 9 54 5766105 15556.16 1588 1595 370.6
C 15 214 661217 1780.06 1588 1595 370.6
C 0 239 223679 599.32 1588 1595 370.6
D 12 6 342909 870.97 1615 1574 391.9
D 2 249 210358 532.75 1615 1574 391.9
D 1 47 120649 303.84 1615 1574 391.9

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