ASTROSAT CZTI

Data Quality Report

Orbit 16687

Creation date: 2024-06-27T17:26:12.959111
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/AS1A05_012T02_9000002468_16687cztM0_level2.evt modeM0/AS1A05_012T02_9000002468_16687cztM0_level2_quad_clean.evt
Size (bytes)720,178,56082,321,920
Size686.8 MB 78.5 MB
Events in quadrant A5,657,187529,177
Events in quadrant B3,319,269550,498
Events in quadrant C2,956,660533,295
Events in quadrant D9,484,134472,028

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207372
B0134351
C0123341
D0322731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5838103317.694416%
B5838280.479616%
C5838320.548133%
D5838184031.517643%

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 7149 5840 756 756 10.57% 12.95%
B 7149 5840 7 7 0.10% 0.12%
C 7149 5840 0 0 0.00% 0.00%
D 7149 5840 1665 1665 23.29% 28.51%

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 15 174 2851267 20130.27 713 700 141.6
A 12 96 31860 220.05 713 700 141.6
A 9 143 17515 118.74 713 700 141.6
B 15 35 188472 1333.02 747 727 140.8
B 0 229 134409 949.16 747 727 140.8
B 0 189 25833 178.26 747 727 140.8
C 14 238 112712 670.71 724 730 167.0
C 3 233 16943 97.11 724 730 167.0
C 7 247 6530 34.74 724 730 167.0
D 2 16 4432783 27089.29 679 660 163.6
D 1 52 2069993 12647.84 679 660 163.6
D 5 222 219917 1340.11 679 660 163.6

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