ASTROSAT CZTI

Data Quality Report

Orbit 25869

Creation date: 2024-06-27T19:22:17.456489
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/AS1A07_068T01_9000003756_25869cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25869cztM0_level2_quad_clean.evt
Size (bytes)524,831,04095,328,000
Size500.5 MB 90.9 MB
Events in quadrant A4,325,612629,965
Events in quadrant B4,595,263587,715
Events in quadrant C3,209,041601,954
Events in quadrant D3,313,439603,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174230
B0179400
C0138280
D0143730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6652721.082381%
B66515678.525034%
C6652510.766687%
D6651310.466095%

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 7622 6653 38 38 0.50% 0.57%
B 7622 6653 506 506 6.64% 7.61%
C 7622 6653 0 0 0.00% 0.00%
D 7621 6652 17 17 0.22% 0.26%

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 0 13 1168475 7102.32 818 806 164.4
A 13 254 10034 56.13 818 806 164.4
A 3 137 7544 40.98 818 806 164.4
B 10 245 1538019 10338.5 775 756 148.7
B 12 111 17933 115.52 775 756 148.7
B 11 111 15963 102.27 775 756 148.7
C 14 238 125574 686.59 775 780 181.8
C 3 233 61121 331.98 775 780 181.8
C 13 61 5426 25.56 775 780 181.8
D 1 52 262638 1390.44 785 765 188.3
D 8 195 35781 185.92 785 765 188.3
D 2 234 26808 138.28 785 765 188.3

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