ASTROSAT CZTI

Data Quality Report

Orbit 20302

Creation date: 2024-06-27T18:13:37.956656
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_174T01_9000003008_20302cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20302cztM0_level2_quad_clean.evt
Size (bytes)1,794,539,520293,592,960
Size1.7 GB 280.0 MB
Events in quadrant A11,289,7911,855,458
Events in quadrant B13,322,1501,876,673
Events in quadrant C11,308,3351,811,871
Events in quadrant D16,848,6181,738,603

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0488664
B0544754
C0483994
D0657725

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04780
B04780
C04780
D04780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A233644942.114364%
B2336411735.020544%
C233645322.277007%
D2336319018.136798%

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 37889 23368 18 18 0.05% 0.08%
B 37889 23367 480 480 1.27% 2.05%
C 37889 23368 2 2 0.01% 0.01%
D 37888 23367 1319 1319 3.48% 5.64%

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 4 2 132625 227.49 2836 2771 570.8
A 14 238 77076 130.17 2836 2771 570.8
A 8 205 60010 100.28 2836 2771 570.8
B 4 142 1406933 2638.97 2789 2715 532.1
B 7 220 429477 802.02 2789 2715 532.1
B 0 197 312490 582.17 2789 2715 532.1
C 14 238 423677 658.11 2736 2753 639.6
C 0 207 151127 231.98 2736 2753 639.6
C 3 233 42364 61.93 2736 2753 639.6
D 1 52 6086687 9220.92 2717 2642 659.8
D 2 184 170411 254.27 2717 2642 659.8
D 12 17 151442 225.52 2717 2642 659.8

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