ASTROSAT CZTI

Data Quality Report

Orbit 38594

Creation date: 2024-06-27T21:53:52.056163
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_052T04_9000005388_38594cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38594cztM0_level2_quad_clean.evt
Size (bytes)470,692,80092,966,400
Size448.9 MB 88.7 MB
Events in quadrant A2,938,165665,152
Events in quadrant B4,337,894627,182
Events in quadrant C3,319,878642,730
Events in quadrant D6,421,832513,872

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117673
B0163192
C0131912
D0227522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5228140.267789%
B52284849.257842%
C5228811.549350%
D522896518.458301%

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 7350 5229 5 5 0.07% 0.10%
B 7350 5229 378 378 5.14% 7.23%
C 7350 5229 78 78 1.06% 1.49%
D 7350 5229 1027 1027 13.97% 19.64%

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 432638 3446.86 622 611 125.3
A 13 248 58716 463.58 622 611 125.3
A 13 6 22238 172.55 622 611 125.3
B 5 184 1326342 11747.08 596 582 112.9
B 0 183 209084 1847.46 596 582 112.9
B 5 172 108761 958.54 596 582 112.9
C 14 254 691072 5019.61 593 596 137.6
C 15 214 217452 1576.5 593 596 137.6
C 0 10 66303 477.68 593 596 137.6
D 1 47 2855157 20776.32 561 546 137.4
D 12 235 379847 2760.61 561 546 137.4
D 2 249 280992 2041.13 561 546 137.4

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