ASTROSAT CZTI

Data Quality Report

Orbit 32775

Creation date: 2024-06-27T20:41:54.053453
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/AS1T04_064T01_9000004730_32775cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32775cztM0_level2_quad_clean.evt
Size (bytes)1,094,650,560143,605,440
Size1.0 GB 137.0 MB
Events in quadrant A7,386,800946,417
Events in quadrant B5,574,5941,008,796
Events in quadrant C4,402,7771,011,045
Events in quadrant D15,217,071791,534

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273043
B0219792
C0185272
D0511092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A850589010.464433%
B85052152.527925%
C8505901.058201%
D8505260830.664315%

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 13093 8507 781 781 5.97% 9.18%
B 13093 8507 146 146 1.12% 1.72%
C 13093 8507 63 63 0.48% 0.74%
D 13093 8507 2977 2977 22.74% 34.99%

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 12 16 1422747 7173.48 992 976 198.2
A 15 237 1088497 5487.04 992 976 198.2
A 14 63 742475 3741.2 992 976 198.2
B 0 219 490576 2563.11 1021 1000 191.0
B 12 1 334202 1744.43 1021 1000 191.0
B 5 172 266863 1391.89 1021 1000 191.0
C 7 221 151415 658.47 988 998 228.4
C 0 10 137229 596.37 988 998 228.4
C 0 207 62731 270.24 988 998 228.4
D 8 195 7714123 34193.24 884 868 225.6
D 7 80 2241416 9932.46 884 868 225.6
D 2 250 456586 2020.22 884 868 225.6

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