ASTROSAT CZTI

Data Quality Report

Orbit 25701

Creation date: 2024-06-27T19:20:33.652674
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/AS1A09_008T03_9000003746_25701cztM0_level2.evt modeM0/AS1A09_008T03_9000003746_25701cztM0_level2_quad_clean.evt
Size (bytes)2,088,878,400224,570,880
Size1.9 GB 214.2 MB
Events in quadrant A30,518,3891,009,723
Events in quadrant B8,912,6651,599,905
Events in quadrant C8,682,8901,514,306
Events in quadrant D13,924,6621,421,033

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01027140
B0376200
C0372870
D0528560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18175922850.773040%
B181751971.083906%
C181762841.562500%
D1817613907.647447%

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 20070 18175 8369 8369 41.70% 46.05%
B 20070 18175 2 2 0.01% 0.01%
C 20071 18177 5 5 0.02% 0.03%
D 20071 18176 1048 1048 5.22% 5.77%

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 0 13 23842005 69001.18 1722 1683 345.5
A 6 16 31355 85.88 1722 1683 345.5
A 13 254 19952 52.88 1722 1683 345.5
B 0 245 69380 158.87 2207 2150 423.2
B 0 190 59939 136.56 2207 2150 423.2
B 0 219 58547 133.27 2207 2150 423.2
C 14 238 337253 675.22 2115 2125 496.3
C 3 233 69399 135.55 2115 2125 496.3
C 0 207 19757 35.53 2115 2125 496.3
D 1 52 3906784 7686.48 2092 2031 508.0
D 8 195 806918 1584.41 2092 2031 508.0
D 7 80 806434 1583.46 2092 2031 508.0

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