ASTROSAT CZTI

Data Quality Report

Orbit 11828

Creation date: 2024-06-27T16:18:49.919633
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/AS1A04_022T07_9000001748_11828cztM0_level2.evt modeM0/AS1A04_022T07_9000001748_11828cztM0_level2_quad_clean.evt
Size (bytes)615,677,76075,479,040
Size587.2 MB 72.0 MB
Events in quadrant A3,255,270476,128
Events in quadrant B8,238,140435,685
Events in quadrant C3,003,803464,468
Events in quadrant D3,704,406452,180

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01382
B01384
C01382
D01386

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014377328
B0302111397
C013918360
D016061329

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65741522.312139%
B6460199030.804954%
C65661031.568687%
D65741772.692425%

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 7398 6661 0 0 0.00% 0.00%
B 7398 6563 1517 1517 20.51% 23.11%
C 7398 6657 0 0 0.00% 0.00%
D 7398 6660 70 70 0.95% 1.05%

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 1 162 83809 516.33 789 771 160.8
A 1 178 43150 263.51 789 771 160.8
A 1 161 38305 233.39 789 771 160.8
B 10 16 4501857 36338.41 651 636 123.9
B 4 239 644901 5201.16 651 636 123.9
B 3 64 419979 3385.36 651 636 123.9
C 13 61 5689 27.15 768 771 181.2
C 7 238 4425 20.17 768 771 181.2
C 12 4 3540 15.29 768 771 181.2
D 12 233 316255 1718.2 762 739 183.6
D 1 52 217850 1182.32 762 739 183.6
D 13 249 128018 693.12 762 739 183.6

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