ASTROSAT CZTI

Data Quality Report

Orbit 04825

Creation date: 2024-06-27T14:47:33.974952
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/AS1G05_144T01_9000000612_04825cztM0_level2.evt modeM0/AS1G05_144T01_9000000612_04825cztM0_level2_quad_clean.evt
Size (bytes)587,511,36075,015,360
Size560.3 MB 71.5 MB
Events in quadrant A3,613,577447,094
Events in quadrant B5,373,146422,881
Events in quadrant C3,837,820449,638
Events in quadrant D4,457,246426,965

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161803
B0212162
C0164592
D0186802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7540881.167109%
B75405767.639257%
C7540941.246684%
D75402403.183024%

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 7840 7541 9 9 0.11% 0.12%
B 7840 7541 377 377 4.81% 5.00%
C 7840 7541 21 21 0.27% 0.28%
D 7840 7541 155 155 1.98% 2.06%

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 13 251 214956 1209.88 861 841 177.0
A 0 50 41908 232.05 861 841 177.0
A 8 15 25418 138.88 861 841 177.0
B 10 16 1468422 8847.66 853 833 165.9
B 8 3 399401 2402.85 853 833 165.9
B 14 167 75812 452.03 853 833 165.9
C 8 208 465278 2339.78 840 843 198.5
C 9 247 71442 355.67 840 843 198.5
C 12 4 12044 56.43 840 843 198.5
D 12 22 314834 1547.16 826 800 203.0
D 7 237 261483 1284.32 826 800 203.0
D 13 235 249619 1225.87 826 800 203.0

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