ASTROSAT CZTI

Data Quality Report

Orbit 20190714_A05_115T03_9000003032_level2

Creation date: 2019-07-31T13:02:53.835319
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/AS1A05_115T03_9000003032cztM0_level2_bc.evt modeM0/AS1A05_115T03_9000003032cztM0_level2_quad_clean.evt
Size (bytes)4,637,972,1601,427,817,600
Size4.3 GB 1.3 GB
Events in quadrant A26,487,9759,213,529
Events in quadrant B28,555,3529,289,295
Events in quadrant C22,465,7418,879,308
Events in quadrant D55,214,1278,074,658

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01590
C01590
D01590

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02461540
B02549030
C02349360
D03540480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023100
B023100
C023100
D023100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11365424212.130149%
B11365424992.198779%
C11365419741.736850%
D1136531169510.290094%

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 133712 113641 121 121 0.09% 0.11%
B 133712 113641 19 19 0.01% 0.02%
C 133712 113645 5 5 0.00% 0.00%
D 133712 113633 2678 2678 2.00% 2.36%

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 5 16 1511152 1161.39 5905 5789 1296.2
A 6 16 1141186 875.96 5905 5789 1296.2
A 14 254 576503 440.31 5905 5789 1296.2
B 7 220 1463130 1291.97 5973 5826 1128.0
B 0 189 1328822 1172.9 5973 5826 1128.0
B 0 197 625998 549.81 5973 5826 1128.0
C 8 208 190155 137.33 5695 5667 1343.4
C 0 207 93901 65.68 5695 5667 1343.4
C 3 233 75776 52.19 5695 5667 1343.4
D 1 52 9458345 7235.88 5529 5319 1306.4
D 12 238 7046535 5389.74 5529 5319 1306.4
D 5 222 5069291 3876.25 5529 5319 1306.4

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