ASTROSAT CZTI

Data Quality Report

Orbit 20190315_T03_091T01_9000002798_level2

Creation date: 2019-03-16T12:24:56.569201
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_091T01_9000002798cztM0_level2_bc.evt modeM0/AS1T03_091T01_9000002798cztM0_level2_quad_clean.evt
Size (bytes)1,424,707,200541,134,720
Size1.3 GB 516.1 MB
Events in quadrant A8,274,5413,501,682
Events in quadrant B13,492,2313,460,372
Events in quadrant C9,009,7633,355,369
Events in quadrant D9,619,8713,306,033

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0832890
B01038370
C0871100
D0880990

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08240
B08240
C08240
D08240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A402913510.871162%
B4029124256.018714%
C402915961.479239%
D402914241.052344%

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 46041 40293 4 4 0.01% 0.01%
B 46041 40292 362 362 0.79% 0.90%
C 46041 40291 1 1 0.00% 0.00%
D 46041 40292 46 46 0.10% 0.11%

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 4 2 61271 128.66 2098 2064 460.2
A 13 254 59511 124.83 2098 2064 460.2
A 0 13 39395 81.12 2098 2064 460.2
B 10 245 5161212 13073.27 2080 2027 394.6
B 7 220 73969 182.3 2080 2027 394.6
B 4 216 46561 112.85 2080 2027 394.6
C 3 233 1123490 2389.88 2001 1990 469.3
C 9 54 116680 244.4 2001 1990 469.3
C 0 207 40266 81.56 2001 1990 469.3
D 1 52 619224 1301.1 2042 1973 474.4
D 7 238 472694 992.23 2042 1973 474.4
D 7 223 222057 463.91 2042 1973 474.4

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