ASTROSAT CZTI

Data Quality Report

Orbit 37833

Creation date: 2024-06-27T21:45:03.842299
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/AS1C07_001T12_9000005352_37833cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37833cztM0_level2_quad_clean.evt
Size (bytes)1,221,528,960210,746,880
Size1.1 GB 201.0 MB
Events in quadrant A7,825,6161,369,801
Events in quadrant B8,408,4851,378,882
Events in quadrant C8,360,6411,348,639
Events in quadrant D11,342,7411,206,117

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332255
B0355884
C0346964
D0447164

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15650320.204473%
B156502181.392971%
C156501681.073482%
D1565014139.028754%

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 19769 15653 20 20 0.10% 0.13%
B 19768 15652 138 138 0.70% 0.88%
C 19768 15652 154 154 0.78% 0.98%
D 19768 15652 1148 1148 5.81% 7.33%

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 872945 2499.31 1746 1711 348.6
A 9 143 69523 194.53 1746 1711 348.6
A 15 222 52671 146.19 1746 1711 348.6
B 5 172 737174 2236.21 1731 1687 328.9
B 0 213 303214 916.78 1731 1687 328.9
B 0 229 210374 634.5 1731 1687 328.9
C 15 214 656923 1671.77 1689 1698 391.9
C 1 23 479583 1219.3 1689 1698 391.9
C 0 10 309912 786.39 1689 1698 391.9
D 13 249 2292545 5857.27 1616 1573 391.1
D 2 249 926272 2364.15 1616 1573 391.1
D 1 52 366285 932.45 1616 1573 391.1

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