ASTROSAT CZTI

Data Quality Report

Orbit 48152

Creation date: 2024-08-23T17:17:38.027999
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/AS1C09_009T01_9000006406_48152cztM0_level2.fits modeM0/AS1C09_009T01_9000006406_48152cztM0_level2_quad_clean.evt
Size (bytes)372,320,64078,894,720
Size355.1 MB 75.2 MB
Events in quadrant A6,385,672679,636
Events in quadrant B1,062,629180
Events in quadrant C2,826,451674,436
Events in quadrant D3,028,800610,599

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237604
B065111
C0126921
D0132501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60602153.547855%
B6060605999.983498%
C6061921.517901%
D60611322.177858%

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 6920 6061 5 5 0.07% 0.08%
B 6919 6042 0 0 0.00% 0.00%
C 6921 6062 18 18 0.26% 0.30%
D 6921 6062 41 41 0.59% 0.68%

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 3654806 24990.12 691 678 146.2
A 13 248 25954 172.86 691 678 146.2
A 0 243 14467 94.3 691 678 146.2
B 2 177 836174 77483.46 42 41 10.8
B 4 171 31490 2914.34 42 41 10.8
B 4 21 19029 1759.6 42 41 10.8
C 12 2 123686 762.02 680 685 161.4
C 14 254 24134 145.27 680 685 161.4
C 1 3 15494 91.75 680 685 161.4
D 13 29 108596 621.6 682 662 173.6
D 12 2 64644 368.48 682 662 173.6
D 13 171 57163 325.4 682 662 173.6

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