ASTROSAT CZTI

Data Quality Report

Orbit 28168

Creation date: 2024-06-27T19:48:47.719643
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_073T05_9000004068_28168cztM0_level2.evt modeM0/AS1A10_073T05_9000004068_28168cztM0_level2_quad_clean.evt
Size (bytes)540,947,520107,173,440
Size515.9 MB 102.2 MB
Events in quadrant A3,286,809732,262
Events in quadrant B4,373,417705,692
Events in quadrant C3,461,673683,958
Events in quadrant D4,820,956671,405

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135560
B0170570
C0141910
D0186500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6490250.385208%
B64903545.454545%
C6490851.309707%
D64903315.100154%

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 7785 6491 0 0 0.00% 0.00%
B 7785 6491 258 258 3.31% 3.97%
C 7785 6491 9 9 0.12% 0.14%
D 7785 6491 296 296 3.80% 4.56%

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 9503 52.05 851 838 166.5
A 3 137 7583 40.52 851 838 166.5
A 0 226 7214 38.3 851 838 166.5
B 10 245 1043205 6833.15 820 802 152.6
B 15 32 78791 511.23 820 802 152.6
B 0 230 27285 173.6 820 802 152.6
C 3 233 220025 1215.11 794 800 180.4
C 14 238 132416 729.51 794 800 180.4
C 15 208 8544 42.92 794 800 180.4
D 1 52 593613 3182.53 792 773 186.3
D 8 195 460159 2466.11 792 773 186.3
D 5 222 282886 1514.46 792 773 186.3

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