ASTROSAT CZTI

Data Quality Report

Orbit 20180403_G08_028T01_9000002006_level2

Creation date: 2018-04-05T09:47:16.399171
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/AS1G08_028T01_9000002006cztM0_level2_bc.evt modeM0/AS1G08_028T01_9000002006cztM0_level2_quad_clean.evt
Size (bytes)1,301,627,520365,725,440
Size1.2 GB 348.8 MB
Events in quadrant A5,733,6292,355,598
Events in quadrant B8,015,6442,334,633
Events in quadrant C6,309,3912,340,885
Events in quadrant D17,447,7042,118,622

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05700
B05700
C05700
D05700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0578540
B0677190
C0582350
D01056290

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A280281510.538747%
B280288132.900671%
C280281470.524476%
D28028490017.482517%

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 31799 28029 5 5 0.02% 0.02%
B 31799 28029 11 11 0.03% 0.04%
C 31799 28029 0 0 0.00% 0.00%
D 31799 28032 560 560 1.76% 2.00%

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 1 162 77569 233.91 1439 1406 325.6
A 15 69 69074 207.82 1439 1406 325.6
A 15 157 20863 59.76 1439 1406 325.6
B 0 219 844684 2994.76 1425 1385 281.6
B 0 182 719636 2550.68 1425 1385 281.6
B 3 64 381357 1349.37 1425 1385 281.6
C 3 233 674956 2136.55 1405 1389 315.3
C 0 207 65100 202.09 1405 1389 315.3
C 8 128 18999 55.86 1405 1389 315.3
D 13 122 8680503 27812.01 1313 1268 312.1
D 5 222 2538109 8129.13 1313 1268 312.1
D 8 195 629029 2011.62 1313 1268 312.1

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