ASTROSAT CZTI

Data Quality Report

Orbit 41528

Creation date: 2024-06-27T22:30:06.049436
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/AS1A12_035T02_9000005676_41528cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41528cztM0_level2_quad_clean.evt
Size (bytes)355,072,32092,171,520
Size338.6 MB 87.9 MB
Events in quadrant A3,021,174623,400
Events in quadrant B2,610,101633,150
Events in quadrant C3,375,586583,508
Events in quadrant D3,703,680561,784

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123173
B0114992
C0135402
D0147762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5562240.431499%
B5562180.323625%
C55622364.243078%
D55621502.696872%

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 7264 5563 9 9 0.12% 0.16%
B 7264 5563 5 5 0.07% 0.09%
C 7264 5563 230 230 3.17% 4.13%
D 7264 5563 150 150 2.06% 2.70%

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 560171 4364.88 621 607 128.2
A 13 248 30259 231.3 621 607 128.2
A 14 235 17034 128.14 621 607 128.2
B 0 245 68868 577.16 613 596 118.3
B 0 190 66068 553.49 613 596 118.3
B 0 186 30887 256.07 613 596 118.3
C 0 10 498404 3669.49 583 587 135.7
C 14 254 347028 2553.67 583 587 135.7
C 15 214 239526 1761.26 583 587 135.7
D 5 222 490279 3335.58 599 580 146.8
D 12 79 391169 2660.5 599 580 146.8
D 1 47 215674 1465.11 599 580 146.8

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