ASTROSAT CZTI

Data Quality Report

Orbit 36649

Creation date: 2024-06-27T21:29:43.020317
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/AS1A11_049T04_9000005230_36649cztM0_level2.evt modeM0/AS1A11_049T04_9000005230_36649cztM0_level2_quad_clean.evt
Size (bytes)406,563,84051,753,600
Size387.7 MB 49.4 MB
Events in quadrant A2,819,159305,865
Events in quadrant B2,625,802309,431
Events in quadrant C3,465,668293,689
Events in quadrant D3,039,857284,450

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115413
B0110062
C0133702
D0126032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5332260.487622%
B5332100.187547%
C53322344.388597%
D5332821.537884%

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 7125 5333 15 15 0.21% 0.28%
B 7125 5333 2 2 0.03% 0.04%
C 7125 5333 155 155 2.18% 2.91%
D 7125 5333 60 60 0.84% 1.13%

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 203707 1586.18 640 628 128.0
A 9 143 133079 1034.53 640 628 128.0
A 13 6 9591 70.01 640 628 128.0
B 0 221 33593 270.17 638 622 122.0
B 0 199 31523 253.2 638 622 122.0
B 5 172 24796 198.08 638 622 122.0
C 0 10 579685 4120.58 607 611 140.5
C 15 214 223403 1585.35 607 611 140.5
C 0 207 180366 1279.1 607 611 140.5
D 13 171 141239 948.09 614 598 148.3
D 12 6 127690 856.75 614 598 148.3
D 13 249 126676 849.91 614 598 148.3

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