ASTROSAT CZTI

Data Quality Report

Orbit 48100

Creation date: 2024-08-20T14:17:30.983093
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/AS1A13_071T03_9000006400_48100cztM0_level2.fits modeM0/AS1A13_071T03_9000006400_48100cztM0_level2_quad_clean.evt
Size (bytes)487,203,84081,048,960
Size464.6 MB 77.3 MB
Events in quadrant A7,183,853713,740
Events in quadrant B1,140,47443,943
Events in quadrant C2,930,141713,748
Events in quadrant D6,265,481523,043

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258915
B070122
C0136282
D0232482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65314256.507426%
B65316531100.000000%
C6531160.244985%
D6531159324.391364%

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 7591 6531 165 165 2.17% 2.53%
B 7590 6530 0 0 0.00% 0.00%
C 7591 6532 3 3 0.04% 0.05%
D 7591 6532 1338 1338 17.63% 20.48%

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 4255836 28194.28 720 705 150.9
A 14 248 70897 465.09 720 705 150.9
A 13 248 43869 286.0 720 705 150.9
B 2 177 902133 78081.59 46 45 11.6
B 5 32 14758 1273.51 46 45 11.6
B 4 21 12710 1096.24 46 45 11.6
C 12 2 53048 307.83 719 722 170.0
C 14 254 36898 212.82 719 722 170.0
C 12 250 32327 185.93 719 722 170.0
D 2 37 3644322 23986.09 604 584 151.9
D 11 224 95436 624.39 604 584 151.9
D 2 165 75164 490.95 604 584 151.9

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