ASTROSAT CZTI

Data Quality Report

Orbit 20211109_A11_007T07_9000004758_level2

Creation date: 2021-11-11T18:56:07.424226
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A11_007T07_9000004758cztM0_level2_bc.evt modeM0/AS1A11_007T07_9000004758cztM0_level2_quad_clean.evt
Size (bytes)4,690,278,720738,360,000
Size4.4 GB 704.2 MB
Events in quadrant A12,343,9435,224,692
Events in quadrant B20,516,9094,949,917
Events in quadrant C22,883,5605,017,853
Events in quadrant D82,298,7763,113,918

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012020
B012020
C012020
D012020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01195480
B01569350
C01623970
D03491580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58975530.089869%
B5897539426.684188%
C5897533605.697329%
D589752818747.794828%

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 81441 58975 0 0 0.00% 0.00%
B 81441 58973 216 216 0.27% 0.37%
C 81441 58977 293 293 0.36% 0.50%
D 81441 58972 18981 18981 23.31% 32.19%

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 116290 165.43 3129 3081 684.3
A 15 169 61362 85.17 3129 3081 684.3
A 13 6 49137 67.3 3129 3081 684.3
B 5 172 5440579 9049.41 3025 2957 600.9
B 5 200 1000627 1660.34 3025 2957 600.9
B 0 189 623719 1033.09 3025 2957 600.9
C 8 111 6195502 9092.84 2983 2968 681.0
C 7 221 1772397 2598.15 2983 2968 681.0
C 0 10 1095425 1604.12 2983 2968 681.0
D 7 223 49884882 79024.21 2333 2288 631.2
D 12 218 9637525 15264.18 2333 2288 631.2
D 8 195 7179502 11370.17 2333 2288 631.2

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