ASTROSAT CZTI

Data Quality Report

Orbit 45025

Creation date: 2024-06-27T23:09:07.839777
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_020T01_9000006040_45025cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45025cztM0_level2_quad_clean.evt
Size (bytes)519,436,800114,114,240
Size495.4 MB 108.8 MB
Events in quadrant A5,482,107770,228
Events in quadrant B4,555,732783,366
Events in quadrant C3,049,782773,604
Events in quadrant D5,642,328679,927

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202571
B0177261
C0132462
D0212441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64271742.707328%
B64282714.215930%
C6427550.855765%
D64273996.208184%

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 7622 6428 2 2 0.03% 0.03%
B 7623 6429 99 99 1.30% 1.54%
C 7622 6428 0 0 0.00% 0.00%
D 7622 6428 263 263 3.45% 4.09%

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 2412005 14818.49 785 769 162.7
A 0 243 18796 110.79 785 769 162.7
A 13 248 12443 71.74 785 769 162.7
B 4 171 367980 2451.28 773 752 149.8
B 0 183 292201 1945.44 773 752 149.8
B 0 155 273831 1822.82 773 752 149.8
C 15 208 19184 101.93 772 777 180.6
C 3 233 7878 39.32 772 777 180.6
C 1 3 6687 32.73 772 777 180.6
D 11 241 862050 4506.97 761 739 191.1
D 5 235 436255 2278.92 761 739 191.1
D 13 29 259676 1354.94 761 739 191.1

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