ASTROSAT CZTI

Data Quality Report

Orbit 07626

Creation date: 2024-06-27T15:21:57.740060
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_178T01_9000001048_07626cztM0_level2.evt modeM0/AS1A02_178T01_9000001048_07626cztM0_level2_quad_clean.evt
Size (bytes)471,268,80074,416,320
Size449.4 MB 71.0 MB
Events in quadrant A3,809,650463,867
Events in quadrant B3,087,906473,609
Events in quadrant C3,877,203457,955
Events in quadrant D3,097,076445,285

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152022
B0127421
C0153871
D0129241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5905701.185436%
B5905721.219306%
C59051181.998307%
D5905530.897544%

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 7180 5906 12 12 0.17% 0.20%
B 7180 5906 28 28 0.39% 0.47%
C 7180 5906 83 83 1.16% 1.41%
D 7180 5906 24 24 0.33% 0.41%

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 13 251 921056 6080.31 750 736 151.4
A 0 226 7242 42.98 750 736 151.4
A 12 194 6604 38.77 750 736 151.4
B 4 239 86570 610.2 747 732 140.7
B 0 229 51013 357.43 747 732 140.7
B 10 245 14904 100.74 747 732 140.7
C 9 68 1009913 5986.83 731 736 168.6
C 1 16 11198 62.06 731 736 168.6
C 13 61 5448 27.95 731 736 168.6
D 2 152 127358 708.25 735 714 178.8
D 2 14 96846 537.61 735 714 178.8
D 5 233 40051 219.99 735 714 178.8

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