ASTROSAT CZTI

Data Quality Report

Orbit 26146

Creation date: 2024-06-27T19:25:21.970398
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_138T04_9000003776_26146cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26146cztM0_level2_quad_clean.evt
Size (bytes)593,663,04086,086,080
Size566.2 MB 82.1 MB
Events in quadrant A3,459,419536,017
Events in quadrant B3,456,483548,827
Events in quadrant C3,509,624523,821
Events in quadrant D7,076,078507,364

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148180
B0146760
C0147950
D0256330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70372133.026858%
B70382333.310600%
C70382042.898551%
D7038103014.634839%

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 7167 7037 7 7 0.10% 0.10%
B 7168 7038 3 3 0.04% 0.04%
C 7168 7038 0 0 0.00% 0.00%
D 7168 7038 943 943 13.16% 13.40%

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 68159 375.02 879 857 179.5
A 13 254 10297 52.6 879 857 179.5
A 3 137 8439 42.25 879 857 179.5
B 0 190 21233 120.34 868 846 169.4
B 12 111 20889 118.31 868 846 169.4
B 11 111 18813 106.06 868 846 169.4
C 14 238 133006 660.38 842 848 200.1
C 3 233 48409 237.66 842 848 200.1
C 13 250 39745 194.36 842 848 200.1
D 1 52 2888672 14652.71 827 808 197.1
D 1 3 982762 4982.33 827 808 197.1
D 12 233 46465 231.66 827 808 197.1

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