ASTROSAT CZTI

Data Quality Report

Orbit 26468

Creation date: 2024-06-27T19:29:24.623681
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/AS1A09_104T02_9000003826_26468cztM0_level2.evt modeM0/AS1A09_104T02_9000003826_26468cztM0_level2_quad_clean.evt
Size (bytes)1,097,449,920149,808,960
Size1.0 GB 142.9 MB
Events in quadrant A6,018,102970,757
Events in quadrant B6,238,186984,547
Events in quadrant C6,632,693938,522
Events in quadrant D13,490,907766,329

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258550
B0262040
C0273770
D0485590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126801401.104101%
B126801951.537855%
C126813022.381516%
D12680268121.143533%

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 13996 12681 0 0 0.00% 0.00%
B 13996 12681 14 14 0.10% 0.11%
C 13997 12682 61 61 0.44% 0.48%
D 13996 12681 2176 2176 15.55% 17.16%

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 13 254 19976 59.0 1556 1522 312.8
A 6 16 16894 49.14 1556 1522 312.8
A 3 137 15039 43.21 1556 1522 312.8
B 12 111 37319 120.15 1552 1514 298.0
B 11 111 33099 105.99 1552 1514 298.0
B 0 230 32443 103.79 1552 1514 298.0
C 2 16 445136 1267.43 1488 1499 350.0
C 14 238 236131 670.32 1488 1499 350.0
C 3 233 150012 424.29 1488 1499 350.0
D 7 80 7437812 22976.85 1353 1319 323.7
D 11 176 283935 873.21 1353 1319 323.7
D 12 233 249698 767.43 1353 1319 323.7

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