ASTROSAT CZTI

Data Quality Report

Orbit 20190324_T03_094T01_9000002816_level2

Creation date: 2019-04-03T11:52:53.781328
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_094T01_9000002816cztM0_level2_bc.evt modeM0/AS1T03_094T01_9000002816cztM0_level2_quad_clean.evt
Size (bytes)6,038,282,8801,932,768,000
Size5.6 GB 1.8 GB
Events in quadrant A39,089,04912,273,346
Events in quadrant B36,473,23712,572,671
Events in quadrant C34,892,63011,978,110
Events in quadrant D62,184,97511,418,631

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030640
B030640
C030640
D030640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03337380
B03325540
C03265790
D04239290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15032335172.339629%
B15032327731.844694%
C15032332442.158020%
D15032392406.146764%

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 173867 150328 1075 1075 0.62% 0.72%
B 173867 150326 43 43 0.02% 0.03%
C 173868 150330 228 228 0.13% 0.15%
D 173867 150314 1352 1352 0.78% 0.90%

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 6 16 7095108 4041.07 8064 7915 1753.8
A 0 13 322017 179.1 8064 7915 1753.8
A 13 254 216911 119.17 8064 7915 1753.8
B 7 220 2049776 1315.6 8159 7957 1552.0
B 4 216 555343 352.69 8159 7957 1552.0
B 10 245 405589 256.2 8159 7957 1552.0
C 3 233 4268859 2355.25 7750 7693 1809.2
C 0 207 487721 265.32 7750 7693 1809.2
C 5 112 275383 147.96 7750 7693 1809.2
D 12 1 8151187 4528.99 7735 7456 1798.1
D 7 238 7208098 4004.51 7735 7456 1798.1
D 1 52 6688948 3715.79 7735 7456 1798.1

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