ASTROSAT CZTI

Data Quality Report

Orbit 46004

Creation date: 2024-06-27T23:18:39.249228
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_012T08_9000006150_46004cztM0_level2.fits modeM0/AS1A13_012T08_9000006150_46004cztM0_level2_quad_clean.evt
Size (bytes)958,855,680191,756,160
Size914.4 MB 182.9 MB
Events in quadrant A10,390,4311,275,418
Events in quadrant B12,252,3531,205,721
Events in quadrant C5,540,4561,290,525
Events in quadrant D6,344,7921,170,268

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0388052
B0452222
C0258842
D0279972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124834743.797164%
B12484165213.232938%
C124841731.385774%
D124842832.266902%

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 13378 12483 4 4 0.03% 0.03%
B 13379 12484 934 934 6.98% 7.48%
C 13379 12484 5 5 0.04% 0.04%
D 13379 12484 114 114 0.85% 0.91%

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 4947282 17057.87 1400 1368 289.9
A 13 254 19016 60.86 1400 1368 289.9
A 3 137 16641 52.67 1400 1368 289.9
B 3 112 6759211 25173.43 1355 1307 268.5
B 8 234 38934 140.16 1355 1307 268.5
B 12 111 35095 125.86 1355 1307 268.5
C 14 254 90698 273.41 1386 1392 326.6
C 12 2 35453 104.28 1386 1392 326.6
C 13 61 9366 24.41 1386 1392 326.6
D 2 249 459030 1328.08 1379 1337 344.6
D 1 52 184001 530.03 1379 1337 344.6
D 13 249 107213 307.22 1379 1337 344.6

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