ASTROSAT CZTI

Data Quality Report

Orbit 06658

Creation date: 2024-06-27T15:09:57.739862
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/AS1A02_103T01_9000000904_06658cztM0_level2.evt modeM0/AS1A02_103T01_9000000904_06658cztM0_level2_quad_clean.evt
Size (bytes)660,288,96090,984,960
Size629.7 MB 86.8 MB
Events in quadrant A5,952,779560,911
Events in quadrant B3,144,295645,902
Events in quadrant C5,664,070560,866
Events in quadrant D4,820,689558,589

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217613
B0132772
C0208812
D0186322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6132133821.819961%
B6132420.684932%
C613293015.166341%
D613270511.497065%

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 7457 6133 890 890 11.94% 14.51%
B 7457 6133 5 5 0.07% 0.08%
C 7457 6132 725 725 9.72% 11.82%
D 7457 6133 511 511 6.85% 8.33%

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 14 111 2839072 20268.35 695 681 140.0
A 15 234 232996 1658.91 695 681 140.0
A 8 15 197004 1401.9 695 681 140.0
B 4 48 86145 592.31 762 745 144.2
B 4 81 46149 314.91 762 745 144.2
B 0 214 15755 104.11 762 745 144.2
C 9 247 3005600 19150.55 680 683 156.9
C 13 61 5343 29.7 680 683 156.9
C 4 254 5242 29.05 680 683 156.9
D 2 33 1902840 11362.55 681 662 167.4
D 8 195 159067 946.22 681 662 167.4
D 2 14 55077 325.04 681 662 167.4

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