ASTROSAT CZTI

Data Quality Report

Orbit 21116

Creation date: 2024-06-27T18:23:47.131286
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/AS1A05_104T05_9000003120_21116cztM0_level2.evt modeM0/AS1A05_104T05_9000003120_21116cztM0_level2_quad_clean.evt
Size (bytes)457,842,24060,940,800
Size436.6 MB 58.1 MB
Events in quadrant A2,428,553406,200
Events in quadrant B4,854,168354,063
Events in quadrant C2,390,105384,440
Events in quadrant D3,863,651359,574

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103931
B0175693
C0101551
D0149471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4852140.288541%
B4851100620.737992%
C4851340.700886%
D48511843.793032%

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 6092 4853 0 0 0.00% 0.00%
B 6091 4852 702 702 11.53% 14.47%
C 6091 4852 0 0 0.00% 0.00%
D 6091 4852 160 160 2.63% 3.30%

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 6 16 72355 577.29 610 598 124.3
A 13 254 6322 46.05 610 598 124.3
A 0 226 5205 37.06 610 598 124.3
B 0 182 2337028 21512.9 573 559 108.6
B 3 64 112649 1032.06 573 559 108.6
B 7 220 71369 651.98 573 559 108.6
C 14 238 92591 665.65 586 590 138.2
C 8 128 7011 46.46 586 590 138.2
C 13 61 4270 26.63 586 590 138.2
D 1 20 906981 6489.0 578 564 139.7
D 5 222 374384 2676.16 578 564 139.7
D 1 239 151074 1077.49 578 564 139.7

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