ASTROSAT CZTI

Data Quality Report

Orbit 21315

Creation date: 2024-06-27T18:26:17.021830
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_037T01_9000003144_21315cztM0_level2.evt modeM0/AS1A05_037T01_9000003144_21315cztM0_level2_quad_clean.evt
Size (bytes)1,399,919,040226,800,000
Size1.3 GB 216.3 MB
Events in quadrant A10,636,1341,403,194
Events in quadrant B9,466,0111,434,139
Events in quadrant C9,025,4501,395,012
Events in quadrant D11,975,9291,317,432

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0437724
B0401034
C0390034
D0485484

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191352281.191534%
B191361620.846572%
C191361620.846572%
D191366863.584866%

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 21525 19137 99 99 0.46% 0.52%
B 21526 19139 14 14 0.07% 0.07%
C 21526 19138 0 0 0.00% 0.00%
D 21526 19139 584 584 2.71% 3.05%

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 15 236 449454 964.55 2311 2268 463.6
A 10 253 417930 896.55 2311 2268 463.6
A 9 143 366657 785.96 2311 2268 463.6
B 0 189 166031 372.44 2310 2249 439.7
B 3 64 119036 265.58 2310 2249 439.7
B 0 190 62763 137.61 2310 2249 439.7
C 14 238 344422 658.52 2219 2239 519.6
C 13 61 15744 25.99 2219 2239 519.6
C 10 91 13541 21.75 2219 2239 519.6
D 12 233 1351295 2519.3 2211 2152 535.5
D 13 174 858285 1598.69 2211 2152 535.5
D 1 52 507767 944.15 2211 2152 535.5

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