ASTROSAT CZTI

Data Quality Report

Orbit 06850

Creation date: 2024-06-27T15:12:22.040045
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/AS1G06_135T03_9000000944_06850cztM0_level2.evt modeM0/AS1G06_135T03_9000000944_06850cztM0_level2_quad_clean.evt
Size (bytes)359,075,52068,034,240
Size342.4 MB 64.9 MB
Events in quadrant A2,639,863428,438
Events in quadrant B2,649,940433,209
Events in quadrant C2,502,946428,367
Events in quadrant D2,733,217411,401

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112882
B0113931
C0110561
D0118061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5112500.978091%
B51121212.366980%
C5112410.802034%
D51121723.364632%

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 5287 5113 0 0 0.00% 0.00%
B 5287 5113 25 25 0.47% 0.49%
C 5287 5113 6 6 0.11% 0.12%
D 5287 5113 97 97 1.83% 1.90%

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 8 15 233196 1894.15 605 590 122.8
A 15 239 74095 598.56 605 590 122.8
A 0 226 5858 42.89 605 590 122.8
B 0 228 231089 1987.34 609 592 116.0
B 15 204 16667 138.6 609 592 116.0
B 0 219 11678 95.58 609 592 116.0
C 10 22 158979 1154.12 589 591 137.2
C 9 247 20589 145.72 589 591 137.2
C 9 68 18872 133.21 589 591 137.2
D 2 33 343528 2387.9 579 558 143.6
D 8 195 137585 954.04 579 558 143.6
D 2 14 20466 138.61 579 558 143.6

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