ASTROSAT CZTI

Data Quality Report

Orbit 20170629_A03_005T01_9000001348_level2

Creation date: 2017-10-18T08:08:21.289774
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/AS1A03_005T01_9000001348cztM0_level2.evt modeM0/AS1A03_005T01_9000001348cztM0_level2_quad_clean.evt
Size (bytes)3,887,259,840670,844,160
Size3.6 GB 639.8 MB
Events in quadrant A28,508,1604,268,783
Events in quadrant B23,475,8394,296,671
Events in quadrant C25,423,0064,292,680
Events in quadrant D36,973,6774,055,324

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010140
B010140
C010100
D010080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01170300
B01032800
C01093570
D01439320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495876451.300744%
B496905501.106863%
C496298931.799351%
D4958834636.983544%

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 63941 50252 13 13 0.02% 0.03%
B 63941 50321 3 3 0.00% 0.01%
C 63941 50286 309 309 0.48% 0.61%
D 63941 50284 2679 2679 4.19% 5.33%

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 8 5 4560739 3794.1 5962 5841 1200.5
A 1 162 540781 445.59 5962 5841 1200.5
A 1 178 187339 151.18 5962 5841 1200.5
B 4 173 258087 225.57 5961 5812 1118.4
B 12 111 128897 110.06 5961 5812 1118.4
B 11 111 104719 88.44 5961 5812 1118.4
C 4 254 2117664 1585.7 5825 5873 1331.8
C 9 68 554702 412.1 5825 5873 1331.8
C 13 61 43166 28.0 5825 5873 1331.8
D 1 52 8905220 6592.94 5641 5512 1349.9
D 8 195 3269975 2418.33 5641 5512 1349.9
D 2 136 969830 714.37 5641 5512 1349.9

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