ASTROSAT CZTI

Data Quality Report

Orbit 11750

Creation date: 2024-06-27T16:17:40.503811
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_113T03_9000001738_11750cztM0_level2.evt modeM0/AS1A04_113T03_9000001738_11750cztM0_level2_quad_clean.evt
Size (bytes)325,719,36054,912,960
Size310.6 MB 52.4 MB
Events in quadrant A2,439,767343,901
Events in quadrant B2,580,669352,389
Events in quadrant C1,895,297354,031
Events in quadrant D2,676,619330,426

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098302
B0102171
C081621
D0106941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3994210.525789%
B39941192.979469%
C3994110.275413%
D3994471.176765%

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 5174 3995 0 0 0.00% 0.00%
B 5174 3995 41 41 0.79% 1.03%
C 5174 3995 0 0 0.00% 0.00%
D 5174 3995 26 26 0.50% 0.65%

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 357120 3512.09 493 482 101.5
A 1 162 53677 523.85 493 482 101.5
A 6 16 29402 284.8 493 482 101.5
B 4 239 445864 4733.36 495 485 94.1
B 15 204 61267 645.97 495 485 94.1
B 4 81 46362 487.57 495 485 94.1
C 12 4 5228 42.07 484 487 112.7
C 13 61 3638 27.96 484 487 112.7
C 14 234 1774 11.42 484 487 112.7
D 8 195 379076 3301.22 477 464 114.7
D 1 52 309151 2691.52 477 464 114.7
D 13 249 52163 450.78 477 464 114.7

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