ASTROSAT CZTI

Data Quality Report

Orbit 41819

Creation date: 2024-06-27T22:33:10.984576
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/AS1A12_093T02_9000005704_41819cztM0_level2.fits modeM0/AS1A12_093T02_9000005704_41819cztM0_level2_quad_clean.evt
Size (bytes)379,275,84098,619,840
Size361.7 MB 94.1 MB
Events in quadrant A3,399,158668,065
Events in quadrant B2,767,802686,451
Events in quadrant C3,649,883623,141
Events in quadrant D3,759,160592,173

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137512
B0121562
C0143852
D0150392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5955210.352645%
B5955180.302267%
C59552504.198153%
D59561392.333781%

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 9300 5957 3 3 0.03% 0.05%
B 9300 5956 5 5 0.05% 0.08%
C 9300 5956 246 246 2.65% 4.13%
D 9301 5958 133 133 1.43% 2.23%

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 610753 4376.7 678 664 139.4
A 14 24 85613 609.41 678 664 139.4
A 12 189 60678 430.53 678 664 139.4
B 5 32 27708 204.84 674 655 132.1
B 0 245 24454 180.21 674 655 132.1
B 0 183 23178 170.54 674 655 132.1
C 0 10 925566 6177.93 636 639 149.7
C 15 214 238710 1590.16 636 639 149.7
C 13 61 4348 24.77 636 639 149.7
D 12 79 487431 3033.76 652 633 160.5
D 13 249 311272 1935.92 652 633 160.5
D 12 6 281018 1747.38 652 633 160.5

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