ASTROSAT CZTI

Data Quality Report

Orbit 20200224_A07_027T03_9000003528_level2

Creation date: 2020-02-27T12:32:50.216757
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_027T03_9000003528cztM0_level2_bc.evt modeM0/AS1A07_027T03_9000003528cztM0_level2_quad_clean.evt
Size (bytes)1,760,472,000513,607,680
Size1.6 GB 489.8 MB
Events in quadrant A8,024,4173,356,337
Events in quadrant B8,520,6123,412,700
Events in quadrant C9,411,8363,236,425
Events in quadrant D24,822,8232,992,315

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07580
B07580
C07580
D07580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0775430
B0792130
C0829310
D01339870

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A372542560.687175%
B372544861.304558%
C372548642.319214%
D3725427177.293177%

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 44404 37258 0 0 0.00% 0.00%
B 44404 37257 3 3 0.01% 0.01%
C 44404 37257 19 19 0.04% 0.05%
D 44404 37255 237 237 0.53% 0.64%

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 62070 133.5 2072 2038 449.7
A 0 226 13392 25.25 2072 2038 449.7
A 12 194 12854 24.05 2072 2038 449.7
B 3 64 230864 580.07 2096 2050 394.5
B 0 189 36076 86.26 2096 2050 394.5
B 0 245 35422 84.6 2096 2050 394.5
C 0 10 766583 1651.29 1978 1973 463.0
C 0 207 528986 1138.16 1978 1973 463.0
C 0 239 399125 857.71 1978 1973 463.0
D 8 195 12048047 26663.06 1953 1888 451.8
D 1 52 4065329 8994.05 1953 1888 451.8
D 13 174 566935 1250.68 1953 1888 451.8

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