ASTROSAT CZTI

Data Quality Report

Orbit 24061

Creation date: 2024-06-27T19:01:40.782299
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_165T01_9000003558_24061cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24061cztM0_level2_quad_clean.evt
Size (bytes)500,739,840136,779,840
Size477.5 MB 130.4 MB
Events in quadrant A3,332,017926,171
Events in quadrant B3,466,490935,347
Events in quadrant C4,136,254897,305
Events in quadrant D3,745,670887,270

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146251
B0149722
C0170131
D0157831

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7135700.981079%
B71351131.583742%
C71351081.513665%
D7135640.896987%

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 7480 7136 0 0 0.00% 0.00%
B 7480 7136 6 6 0.08% 0.08%
C 7480 7136 0 0 0.00% 0.00%
D 7480 7136 32 32 0.43% 0.45%

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 6 16 15331 84.49 858 838 171.5
A 13 254 11412 61.65 858 838 171.5
A 0 226 7522 38.97 858 838 171.5
B 0 189 52944 325.31 850 830 160.2
B 12 111 18831 112.37 850 830 160.2
B 0 245 18119 107.92 850 830 160.2
C 7 247 769610 4082.24 815 819 188.3
C 14 238 130155 686.77 815 819 188.3
C 2 16 28789 148.52 815 819 188.3
D 1 52 214469 1057.95 833 807 202.0
D 8 195 187773 925.76 833 807 202.0
D 12 217 87200 427.78 833 807 202.0

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