ASTROSAT CZTI

Data Quality Report

Orbit 07468

Creation date: 2024-06-27T15:20:09.419511
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/AS1G06_116T01_9000001026_07468cztM0_level2.evt modeM0/AS1G06_116T01_9000001026_07468cztM0_level2_quad_clean.evt
Size (bytes)426,934,080122,120,640
Size407.2 MB 116.5 MB
Events in quadrant A2,914,978822,690
Events in quadrant B3,233,325839,967
Events in quadrant C2,888,262826,868
Events in quadrant D3,479,827784,798

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126632
B0138101
C0125401
D0140841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6076921.514154%
B60761322.172482%
C6076851.398947%
D60761392.287689%

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 7336 6076 0 0 0.00% 0.00%
B 7336 6077 25 25 0.34% 0.41%
C 7336 6077 1 1 0.01% 0.02%
D 7336 6076 61 61 0.83% 1.00%

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 15 20524 132.57 748 733 149.3
A 15 239 11258 70.5 748 733 149.3
A 0 226 7194 43.28 748 733 149.3
B 4 173 159329 1139.34 753 734 139.2
B 0 214 116197 829.48 753 734 139.2
B 11 51 34307 241.19 753 734 139.2
C 1 16 11306 63.11 736 740 167.4
C 13 61 5762 29.99 736 740 167.4
C 14 67 2327 9.48 736 740 167.4
D 12 221 191715 1097.61 731 710 174.0
D 14 34 160538 918.46 731 710 174.0
D 2 14 113172 646.27 731 710 174.0

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