ASTROSAT CZTI

Data Quality Report

Orbit 50858

Creation date: 2025-02-22T00:03:47.333038
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/AS1C07_001T01_9000006450_50858cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50858cztM0_level2_quad_clean.evt
Size (bytes)547,464,96093,329,280
Size522.1 MB 89.0 MB
Events in quadrant A4,362,257616,444
Events in quadrant B3,739,929682,809
Events in quadrant C5,743,490548,201
Events in quadrant D5,905,985516,660

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174391
B0157161
C0216773
D0219921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66153405.139834%
B66162063.113664%
C661580212.123961%
D661584212.728647%

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 7550 6615 198 198 2.62% 2.99%
B 7551 6616 56 56 0.74% 0.85%
C 7550 6615 560 560 7.42% 8.47%
D 7550 6615 699 699 9.26% 10.57%

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 8 38 349214 2020.79 701 685 172.5
A 10 253 296096 1712.81 701 685 172.5
A 4 3 162296 937.03 701 685 172.5
B 10 251 157689 1055.3 705 680 148.8
B 8 128 121124 809.54 705 680 148.8
B 0 229 112513 751.66 705 680 148.8
C 1 29 1053019 5747.04 668 664 183.1
C 7 220 525125 2864.15 668 664 183.1
C 13 96 459443 2505.45 668 664 183.1
D 2 153 1023807 5603.02 656 630 182.6
D 15 108 735410 4023.73 656 630 182.6
D 10 181 435797 2383.02 656 630 182.6

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