ASTROSAT CZTI

Data Quality Report

Orbit 41871

Creation date: 2024-06-27T22:33:53.513652
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/AS1T05_124T01_9000005712_41871cztM0_level2.fits modeM0/AS1T05_124T01_9000005712_41871cztM0_level2_quad_clean.evt
Size (bytes)463,933,44094,622,400
Size442.4 MB 90.2 MB
Events in quadrant A5,023,205604,287
Events in quadrant B2,918,620672,642
Events in quadrant C3,508,444606,980
Events in quadrant D5,253,571559,259

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188483
B0128802
C0140332
D0197782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A604264510.675273%
B6042420.695134%
C60432393.954989%
D60433756.205527%

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 8789 6044 534 534 6.08% 8.84%
B 8789 6044 31 31 0.35% 0.51%
C 8790 6045 228 228 2.59% 3.77%
D 8790 6045 380 380 4.32% 6.29%

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 14 24 1933423 14761.34 635 625 130.9
A 10 83 562017 4287.51 635 625 130.9
A 2 79 46914 353.52 635 625 130.9
B 3 112 129116 989.8 661 642 129.8
B 0 156 88431 676.35 661 642 129.8
B 15 35 65570 500.22 661 642 129.8
C 0 10 831849 5641.06 623 627 147.4
C 15 214 235248 1592.25 623 627 147.4
C 14 254 10991 70.33 623 627 147.4
D 12 79 1023661 6512.63 634 615 157.1
D 2 249 881968 5610.63 634 615 157.1
D 12 217 427755 2719.14 634 615 157.1

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