ASTROSAT CZTI

Data Quality Report

Orbit 30974

Creation date: 2024-06-27T20:21:48.808410
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/AS1A10_071T42_9000004476_30974cztM0_level2.evt modeM0/AS1A10_071T42_9000004476_30974cztM0_level2_quad_clean.evt
Size (bytes)518,123,52089,809,920
Size494.1 MB 85.6 MB
Events in quadrant A3,055,466592,313
Events in quadrant B5,126,688590,714
Events in quadrant C3,427,474560,408
Events in quadrant D3,663,366545,379

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130491
B0194351
C0140271
D0149384

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6171340.550964%
B6172971.571614%
C61721612.608555%
D61711442.333495%

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 7371 6171 0 0 0.00% 0.00%
B 7372 6172 4 4 0.05% 0.06%
C 7372 6172 61 61 0.83% 0.99%
D 7370 6171 104 104 1.41% 1.69%

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 13 254 10910 64.08 792 777 158.1
A 3 137 7618 43.26 792 777 158.1
A 0 226 6794 38.05 792 777 158.1
B 6 159 1828874 12302.52 785 766 148.6
B 0 155 94981 634.03 785 766 148.6
B 0 190 43599 288.25 785 766 148.6
C 0 10 301971 1701.21 754 758 177.1
C 14 238 122041 684.99 754 758 177.1
C 3 233 25330 138.78 754 758 177.1
D 8 195 349675 1925.44 762 742 181.2
D 13 249 275886 1518.27 762 742 181.2
D 2 250 63329 345.36 762 742 181.2

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