ASTROSAT CZTI

Data Quality Report

Orbit 20190513_T03_115T01_9000002914_level2

Creation date: 2019-05-15T10:58:43.272398
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/AS1T03_115T01_9000002914cztM0_level2_bc.evt modeM0/AS1T03_115T01_9000002914cztM0_level2_quad_clean.evt
Size (bytes)4,203,627,8401,723,152,960
Size3.9 GB 1.6 GB
Events in quadrant A27,220,15311,075,856
Events in quadrant B28,210,21211,161,808
Events in quadrant C26,426,62010,752,967
Events in quadrant D36,842,24810,547,523

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01770
B01770
C01770
D01770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025760
B025760
C025760
D025760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02639740
B02692560
C02644680
D02946250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12633216581.312415%
B12633221671.715322%
C12633222461.777855%
D12633227712.193427%

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 143082 126332 20 20 0.01% 0.02%
B 143081 126324 43 43 0.03% 0.03%
C 143081 126327 17 17 0.01% 0.01%
D 143081 126329 397 397 0.28% 0.31%

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 9 143 523333 347.48 6685 6572 1487.2
A 5 16 481162 319.13 6685 6572 1487.2
A 11 29 302429 198.94 6685 6572 1487.2
B 4 216 512595 402.53 6655 6493 1257.3
B 7 220 431778 338.25 6655 6493 1257.3
B 3 64 305180 237.56 6655 6493 1257.3
C 3 233 1061693 699.41 6364 6338 1508.9
C 5 112 594061 389.5 6364 6338 1508.9
C 9 221 102087 63.46 6364 6338 1508.9
D 1 52 7035652 4554.32 6529 6308 1543.4
D 7 238 1550153 1000.26 6529 6308 1543.4
D 7 38 966171 621.9 6529 6308 1543.4

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