ASTROSAT CZTI

Data Quality Report

Orbit 23715

Creation date: 2024-06-27T18:57:50.441591
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/AS1A07_054T01_9000003504_23715cztM0_level2.evt modeM0/AS1A07_054T01_9000003504_23715cztM0_level2_quad_clean.evt
Size (bytes)246,389,76064,877,760
Size235.0 MB 61.9 MB
Events in quadrant A1,573,219438,114
Events in quadrant B1,778,899441,711
Events in quadrant C1,721,745420,609
Events in quadrant D2,140,678408,276

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072330
B077390
C076170
D088550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A361420.055340%
B3614220.608744%
C3614431.189817%
D3615681.881051%

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 3614 3614 0 0 0.00% 0.00%
B 3614 3614 14 14 0.39% 0.39%
C 3614 3614 23 23 0.64% 0.64%
D 3615 3615 57 57 1.58% 1.58%

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 6103 68.88 407 398 82.8
A 3 137 3646 39.21 407 398 82.8
A 0 226 3491 37.34 407 398 82.8
B 15 33 121673 1553.59 402 392 78.1
B 0 229 42363 537.64 402 392 78.1
B 0 189 32698 413.84 402 392 78.1
C 7 247 152826 1676.93 386 388 90.9
C 14 238 61739 674.91 386 388 90.9
C 10 91 3386 32.98 386 388 90.9
D 1 52 568545 5945.5 392 379 95.6
D 7 238 49006 508.85 392 379 95.6
D 12 233 23648 243.5 392 379 95.6

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