ASTROSAT CZTI

Data Quality Report

Orbit 25762

Creation date: 2024-06-27T19:21:12.822214
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/AS1A09_147T01_9000003754_25762cztM0_level2.evt modeM0/AS1A09_147T01_9000003754_25762cztM0_level2_quad_clean.evt
Size (bytes)484,217,28069,543,360
Size461.8 MB 66.3 MB
Events in quadrant A3,315,363422,786
Events in quadrant B3,411,458424,324
Events in quadrant C3,401,287404,707
Events in quadrant D4,095,701400,842

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141270
B0143290
C0141910
D0164560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6486530.817145%
B6486610.940487%
C6486861.325933%
D64861802.775208%

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 7631 6486 0 0 0.00% 0.00%
B 7631 6486 1 1 0.01% 0.02%
C 7631 6486 0 0 0.00% 0.00%
D 7631 6486 142 142 1.86% 2.19%

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 26563 152.17 852 835 169.1
A 13 254 9289 50.0 852 835 169.1
A 3 137 7749 40.89 852 835 169.1
B 0 190 25747 159.43 841 823 156.3
B 3 64 23838 147.22 841 823 156.3
B 0 229 23802 146.99 841 823 156.3
C 3 233 134374 719.87 804 811 185.5
C 14 238 130799 700.6 804 811 185.5
C 13 61 5411 24.79 804 811 185.5
D 7 80 634201 3241.69 814 795 195.4
D 1 52 168625 858.93 814 795 195.4
D 8 195 91295 463.17 814 795 195.4

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