ASTROSAT CZTI

Data Quality Report

Orbit 15987

Creation date: 2024-06-27T17:16:09.521230
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_046T09_9000002358_15987cztM0_level2.evt modeM0/AS1G08_046T09_9000002358_15987cztM0_level2_quad_clean.evt
Size (bytes)239,976,00042,105,600
Size228.9 MB 40.2 MB
Events in quadrant A1,784,449253,494
Events in quadrant B1,794,578256,328
Events in quadrant C1,756,795247,257
Events in quadrant D1,669,321246,512

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080262
B079891
C079061
D079111

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A38361193.102190%
B38361253.258603%
C38361062.763295%
D3836651.694473%

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 4087 3837 14 14 0.34% 0.36%
B 4087 3837 0 0 0.00% 0.00%
C 4087 3837 0 0 0.00% 0.00%
D 4087 3838 1 1 0.02% 0.03%

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 15 239 62514 674.11 446 436 92.1
A 0 226 3836 36.92 446 436 92.1
A 12 96 3626 34.64 446 436 92.1
B 4 173 20140 221.97 447 433 88.8
B 0 189 12172 132.22 447 433 88.8
B 12 111 10533 113.76 447 433 88.8
C 14 238 66206 650.05 429 431 101.2
C 3 233 10495 99.46 429 431 101.2
C 13 61 3145 26.82 429 431 101.2
D 2 234 17039 156.36 435 421 106.3
D 13 172 12913 117.54 435 421 106.3
D 2 120 4836 41.54 435 421 106.3

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