ASTROSAT CZTI

Data Quality Report

Orbit 41944

Creation date: 2024-06-27T22:34:48.995945
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/AS1A12_099T03_9000005720_41944cztM0_level2.fits modeM0/AS1A12_099T03_9000005720_41944cztM0_level2_quad_clean.evt
Size (bytes)358,672,32096,537,600
Size342.1 MB 92.1 MB
Events in quadrant A3,127,217648,599
Events in quadrant B3,389,975637,707
Events in quadrant C2,776,938632,697
Events in quadrant D3,513,293583,177

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128812
B0144013
C0121652
D0146182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6028100.165893%
B60272454.065041%
C602750.082960%
D60271031.708976%

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 7310 6029 4 4 0.05% 0.07%
B 7309 6028 181 181 2.48% 3.00%
C 7309 6028 0 0 0.00% 0.00%
D 7309 6028 121 121 1.66% 2.01%

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 10 83 586070 4349.13 651 638 134.6
A 13 254 9019 62.26 651 638 134.6
A 2 79 8709 59.96 651 638 134.6
B 5 255 378268 3054.18 632 614 123.7
B 0 229 298072 2405.61 632 614 123.7
B 7 202 180465 1454.5 632 614 123.7
C 15 214 266514 1809.22 631 635 147.0
C 0 239 25117 166.59 631 635 147.0
C 3 233 16123 105.39 631 635 147.0
D 13 249 482657 3146.69 630 612 153.2
D 2 249 119202 774.13 630 612 153.2
D 1 52 115334 748.88 630 612 153.2

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