ASTROSAT CZTI

Data Quality Report

Orbit 15631

Creation date: 2024-06-27T17:11:21.811502
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/AS1T02_086T01_9000002316_15631cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15631cztM0_level2_quad_clean.evt
Size (bytes)539,568,00071,812,800
Size514.6 MB 68.5 MB
Events in quadrant A3,197,246441,971
Events in quadrant B3,360,231450,241
Events in quadrant C3,508,442443,193
Events in quadrant D5,848,233399,497

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132483
B0137912
C0144282
D0215562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6291580.921952%
B6291671.065014%
C62911101.748530%
D629184613.447783%

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 7587 6292 0 0 0.00% 0.00%
B 7587 6292 2 2 0.03% 0.03%
C 7587 6292 1 1 0.01% 0.02%
D 7587 6292 793 793 10.45% 12.60%

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 0 226 7415 39.93 830 817 165.2
A 12 194 6193 32.54 830 817 165.2
A 3 137 5218 26.64 830 817 165.2
B 3 209 32925 208.1 834 813 154.3
B 4 251 25744 161.56 834 813 154.3
B 12 111 16994 104.86 834 813 154.3
C 3 233 189049 1015.22 813 820 185.4
C 14 238 129551 694.31 813 820 185.4
C 10 22 18686 96.36 813 820 185.4
D 1 52 2770090 14725.12 782 761 188.1
D 10 40 71197 374.52 782 761 188.1
D 2 234 22781 117.09 782 761 188.1

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