ASTROSAT CZTI

Data Quality Report

Orbit 15656

Creation date: 2024-06-27T17:11:42.728489
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/AS1T02_084T01_9000002318_15656cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15656cztM0_level2_quad_clean.evt
Size (bytes)463,227,84092,828,160
Size441.8 MB 88.5 MB
Events in quadrant A3,138,258600,725
Events in quadrant B3,274,241605,258
Events in quadrant C3,148,726589,081
Events in quadrant D4,017,997554,769

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137553
B0140582
C0134982
D0166672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6615420.634921%
B6615220.332577%
C6615280.423280%
D66153565.381708%

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 7591 6616 19 19 0.25% 0.29%
B 7591 6616 0 0 0.00% 0.00%
C 7590 6615 0 0 0.00% 0.00%
D 7591 6616 342 342 4.51% 5.17%

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 4 2 85628 537.83 778 763 157.8
A 15 157 50473 315.04 778 763 157.8
A 0 226 6869 38.7 778 763 157.8
B 4 216 40543 265.49 784 763 149.8
B 3 64 40056 262.24 784 763 149.8
B 0 189 38844 254.15 784 763 149.8
C 14 238 112832 638.99 747 753 175.4
C 3 233 110823 627.54 747 753 175.4
C 0 207 7442 38.14 747 753 175.4
D 1 52 938279 4710.47 730 714 199.0
D 12 110 123538 617.09 730 714 199.0
D 2 16 94883 473.12 730 714 199.0

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