ASTROSAT CZTI

Data Quality Report

Orbit 49828

Creation date: 2024-12-14T15:34:22.757153
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_9000006440_49828cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49828cztM0_level2_quad_clean.evt
Size (bytes)1,370,188,80048,651,840
Size1.3 GB 46.4 MB
Events in quadrant A16,248,099151,816
Events in quadrant B4,261,423709,552
Events in quadrant C13,722,92824,925
Events in quadrant D15,949,422100,222

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530291
B0174981
C0455561
D0521542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6979564580.885514%
B69793024.327268%
C6979676796.962316%
D6978603686.500430%

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 7674 6979 4835 4835 63.00% 69.28%
B 7674 6981 133 133 1.73% 1.91%
C 7674 6980 3668 3668 47.80% 52.55%
D 7673 6980 5087 5087 66.30% 72.88%

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 3 84 6300091 59830.74 402 392 105.3
A 4 4 5712361 54248.83 402 392 105.3
A 3 130 447360 4245.03 402 392 105.3
B 4 171 294213 1840.74 753 728 159.4
B 0 229 292539 1830.24 753 728 159.4
B 4 206 216876 1355.68 753 728 159.4
C 15 197 4543434 60004.41 244 241 75.7
C 1 44 2039926 26939.23 244 241 75.7
C 15 147 1714606 22642.55 244 241 75.7
D 7 61 4399499 39488.96 369 355 111.4
D 8 48 2428030 21792.05 369 355 111.4
D 7 126 1474652 13234.04 369 355 111.4

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