ASTROSAT CZTI

Data Quality Report

Orbit 15549

Creation date: 2024-06-27T17:10:11.665432
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/AS1G08_030T01_9000002302_15549cztM0_level2.evt modeM0/AS1G08_030T01_9000002302_15549cztM0_level2_quad_clean.evt
Size (bytes)530,354,88099,253,440
Size505.8 MB 94.7 MB
Events in quadrant A3,292,157660,314
Events in quadrant B4,280,062644,700
Events in quadrant C3,398,401622,779
Events in quadrant D4,625,437599,657

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142642
B0169671
C0144671
D0184551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68641171.704545%
B68643685.361305%
C68641692.462121%
D68644236.162587%

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 7175 6866 0 0 0.00% 0.00%
B 7175 6866 228 228 3.18% 3.32%
C 7175 6865 18 18 0.25% 0.26%
D 7175 6866 262 262 3.65% 3.82%

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 9 143 27011 153.05 848 830 171.1
A 0 226 7656 39.9 848 830 171.1
A 12 194 6313 32.05 848 830 171.1
B 3 64 965184 6041.91 832 810 159.6
B 4 48 19075 114.43 832 810 159.6
B 12 111 18877 113.19 832 810 159.6
C 14 238 125518 656.17 810 814 190.0
C 10 22 57642 299.02 810 814 190.0
C 3 233 31297 160.4 810 814 190.0
D 1 52 1335117 6344.14 805 786 210.3
D 5 222 165167 781.56 805 786 210.3
D 2 234 29342 135.77 805 786 210.3

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