ASTROSAT CZTI

Data Quality Report

Orbit 20200130_A07_148T02_9000003474_level2

Creation date: 2020-02-03T14:38:38.303262
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/AS1A07_148T02_9000003474cztM0_level2_bc.evt modeM0/AS1A07_148T02_9000003474cztM0_level2_quad_clean.evt
Size (bytes)3,670,776,0001,014,076,800
Size3.4 GB 967.1 MB
Events in quadrant A17,087,8176,512,036
Events in quadrant B19,218,4026,602,059
Events in quadrant C17,613,0146,399,148
Events in quadrant D51,791,9545,702,576

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01110
C01110
D01110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01671740
B01760170
C01709690
D02899510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016360
B016360
C016340
D016380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8016910201.272312%
B8015615851.977394%
C8015915071.880013%
D801391352416.875679%

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 95975 80287 12 12 0.01% 0.01%
B 95975 80267 14 14 0.01% 0.02%
C 95975 80264 8 8 0.01% 0.01%
D 95975 80251 6287 6287 6.55% 7.83%

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 13 254 127936 132.56 4348 4262 933.0
A 6 16 94192 96.39 4348 4262 933.0
A 4 2 92243 94.3 4348 4262 933.0
B 0 189 1512422 1846.57 4368 4257 816.7
B 0 183 294274 355.09 4368 4257 816.7
B 0 230 218376 262.16 4368 4257 816.7
C 7 247 767413 766.03 4241 4225 996.3
C 2 16 244984 241.65 4241 4225 996.3
C 0 207 59306 55.29 4241 4225 996.3
D 7 238 29196073 31419.05 4054 3919 929.1
D 1 52 5679902 6108.97 4054 3919 929.1
D 2 234 312329 331.94 4054 3919 929.1

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