ASTROSAT CZTI

Data Quality Report

Orbit 46455

Creation date: 2024-06-27T23:23:19.701779
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/AS1A13_037T01_9000006212_46455cztM0_level2.fits modeM0/AS1A13_037T01_9000006212_46455cztM0_level2_quad_clean.evt
Size (bytes)618,264,000108,812,160
Size589.6 MB 103.8 MB
Events in quadrant A6,550,691734,722
Events in quadrant B3,832,955749,736
Events in quadrant C6,747,620678,225
Events in quadrant D5,219,233649,011

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242672
B0161652
C0250802
D0204582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69232844.102268%
B69242193.162912%
C692472610.485269%
D69244025.805893%

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 8498 6924 50 50 0.59% 0.72%
B 8499 6926 124 124 1.46% 1.79%
C 8499 6926 376 376 4.42% 5.43%
D 8499 6926 304 304 3.58% 4.39%

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 10 83 3491339 21815.44 770 754 160.0
A 0 243 23999 145.28 770 754 160.0
A 13 248 17268 103.21 770 754 160.0
B 5 32 404932 2614.39 771 746 154.6
B 10 128 161577 1040.3 771 746 154.6
B 5 172 37941 240.59 771 746 154.6
C 9 54 3715104 20901.07 743 746 177.7
C 3 233 99141 553.68 743 746 177.7
C 12 2 20368 110.41 743 746 177.7
D 1 52 1163019 6178.4 748 724 188.1
D 2 37 320926 1702.09 748 724 188.1
D 2 249 269641 1429.48 748 724 188.1

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