ASTROSAT CZTI

Data Quality Report

Orbit 43895

Creation date: 2024-06-27T22:56:56.258144
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_009T02_9000005914_43895cztM0_level2.fits modeM0/AS1A13_009T02_9000005914_43895cztM0_level2_quad_clean.evt
Size (bytes)515,344,320108,256,320
Size491.5 MB 103.2 MB
Events in quadrant A6,399,156705,894
Events in quadrant B3,195,509788,176
Events in quadrant C3,058,368744,835
Events in quadrant D5,920,459587,905

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241592
B0136712
C0135142
D0219992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64746429.916589%
B6474921.421069%
C6474400.617856%
D6474103415.971579%

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 7624 6475 473 473 6.20% 7.31%
B 7624 6475 9 9 0.12% 0.14%
C 7624 6475 5 5 0.07% 0.08%
D 7624 6475 896 896 11.75% 13.84%

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 15 223 1645593 10692.98 747 733 153.8
A 10 83 1104390 7174.7 747 733 153.8
A 13 248 348329 2259.67 747 733 153.8
B 5 172 72729 486.26 758 735 148.1
B 0 200 34971 231.24 758 735 148.1
B 0 199 31141 205.37 758 735 148.1
C 3 233 83710 476.97 739 744 173.9
C 14 254 44174 249.68 739 744 173.9
C 15 157 18078 99.65 739 744 173.9
D 5 235 1922201 11150.55 682 660 172.3
D 12 233 393654 2280.51 682 660 172.3
D 13 171 196612 1137.09 682 660 172.3

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