ASTROSAT CZTI

Data Quality Report

Orbit 29864

Creation date: 2024-06-27T20:08:26.207294
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/AS1T03_291T01_9000004278_29864cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29864cztM0_level2_quad_clean.evt
Size (bytes)569,888,64098,372,160
Size543.5 MB 93.8 MB
Events in quadrant A3,385,428654,262
Events in quadrant B5,441,611653,261
Events in quadrant C4,027,575611,914
Events in quadrant D3,959,664601,541

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140512
B0202972
C0162842
D0159402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6576540.821168%
B65761342.037713%
C65761372.083333%
D65761261.916058%

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 7681 6577 7 7 0.09% 0.11%
B 7681 6577 2 2 0.03% 0.03%
C 7681 6577 6 6 0.08% 0.09%
D 7681 6577 70 70 0.91% 1.06%

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 8 192 29542 167.49 868 853 171.3
A 13 254 13386 73.17 868 853 171.3
A 3 137 8076 42.17 868 853 171.3
B 6 159 2024045 12593.97 858 841 160.6
B 0 190 45727 279.4 858 841 160.6
B 12 111 18635 110.76 858 841 160.6
C 3 233 652766 3459.45 815 821 188.5
C 14 238 136114 717.91 815 821 188.5
C 10 22 44791 233.32 815 821 188.5
D 8 195 422371 2185.95 817 796 192.9
D 7 238 211733 1093.75 817 796 192.9
D 7 80 53206 271.76 817 796 192.9

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