ASTROSAT CZTI

Data Quality Report

Orbit 46903

Creation date: 2024-06-27T23:29:04.488206
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_068T05_9000006280_46903cztM0_level2.fits modeM0/AS1A13_068T05_9000006280_46903cztM0_level2_quad_clean.evt
Size (bytes)1,152,005,760199,272,960
Size1.1 GB 190.0 MB
Events in quadrant A12,061,3471,357,306
Events in quadrant B12,347,2071,272,734
Events in quadrant C6,023,9531,368,812
Events in quadrant D11,182,9141,113,815

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440124
B0458804
C0278262
D0425532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133113892.922395%
B13310160912.088655%
C133121310.984075%
D13312167112.552584%

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 14157 13312 19 19 0.13% 0.14%
B 14156 13311 947 947 6.69% 7.11%
C 14157 13314 27 27 0.19% 0.20%
D 14156 13312 1394 1394 9.85% 10.47%

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 6204705 20164.96 1478 1442 307.6
A 13 248 75920 242.11 1478 1442 307.6
A 7 3 54671 173.03 1478 1442 307.6
B 3 112 5869404 20419.34 1434 1385 287.4
B 5 255 212808 735.7 1434 1385 287.4
B 5 32 208248 719.84 1434 1385 287.4
C 12 250 194452 562.68 1465 1473 343.0
C 14 254 37353 104.62 1465 1473 343.0
C 12 2 28242 78.05 1465 1473 343.0
D 13 249 2766990 7909.04 1384 1341 349.7
D 2 249 2149570 6143.38 1384 1341 349.7
D 1 52 473130 1349.2 1384 1341 349.7

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