ASTROSAT CZTI

Data Quality Report

Orbit 20200109_A08_009T01_9000003422_level2

Creation date: 2020-01-13T12:31:36.683288
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/AS1A08_009T01_9000003422cztM0_level2_bc.evt modeM0/AS1A08_009T01_9000003422cztM0_level2_quad_clean.evt
Size (bytes)3,475,684,8001,402,012,800
Size3.2 GB 1.3 GB
Events in quadrant A19,887,8259,077,955
Events in quadrant B20,457,0069,293,662
Events in quadrant C22,712,8548,973,040
Events in quadrant D35,672,0198,552,023

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01986950
B02006470
C02083670
D02550160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019460
B019480
C019460
D019460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01330
B01330
C01330
D01330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A958808960.934501%
B9588810891.135700%
C9588120442.131809%
D9588656505.892414%

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 108997 95891 10 10 0.01% 0.01%
B 108997 95897 17 17 0.02% 0.02%
C 108997 95888 44 44 0.04% 0.05%
D 108997 95897 1714 1714 1.57% 1.79%

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 228713 204.4 5060 4971 1094.6
A 13 254 127494 111.93 5060 4971 1094.6
A 15 174 94012 81.34 5060 4971 1094.6
B 0 190 267531 272.22 5141 5018 964.3
B 10 247 119766 118.99 5141 5018 964.3
B 0 189 79505 77.24 5141 5018 964.3
C 0 10 1711485 1467.08 4931 4907 1163.2
C 8 208 857149 732.64 4931 4907 1163.2
C 3 233 504058 429.1 4931 4907 1163.2
D 1 52 11294816 9831.71 4911 4740 1148.3
D 1 239 2368367 2058.31 4911 4740 1148.3
D 7 238 1058486 917.63 4911 4740 1148.3

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