ASTROSAT CZTI

Data Quality Report

Orbit 20180514_C03_022T01_9000002098_level2

Creation date: 2018-05-17T15:43:02.789116
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/AS1C03_022T01_9000002098cztM0_level2_bc.evt modeM0/AS1C03_022T01_9000002098cztM0_level2_quad_clean.evt
Size (bytes)3,202,945,920940,746,240
Size3.0 GB 897.2 MB
Events in quadrant A18,117,1886,030,837
Events in quadrant B22,812,3965,973,108
Events in quadrant C18,161,2115,770,704
Events in quadrant D32,717,9455,491,280

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01637170
B01891450
C01611150
D02248100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015460
B015460
C015460
D015460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A762589091.192006%
B7625839735.209945%
C762586450.845813%
D7625867198.810879%

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 88229 76264 20 20 0.02% 0.03%
B 88229 76261 59 59 0.07% 0.08%
C 88229 76262 1 1 0.00% 0.00%
D 88229 76259 588 588 0.67% 0.77%

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 8 15 1403954 1595.49 4046 3967 877.5
A 12 189 462712 522.81 4046 3967 877.5
A 9 143 408492 461.01 4046 3967 877.5
B 0 182 3938534 5207.51 3940 3826 755.6
B 10 245 637061 838.07 3940 3826 755.6
B 4 97 522588 686.57 3940 3826 755.6
C 3 233 2995194 3598.71 3829 3774 831.2
C 0 207 137481 160.85 3829 3774 831.2
C 13 61 22732 22.81 3829 3774 831.2
D 13 122 4148650 4602.96 3771 3656 900.5
D 5 222 3699099 4103.74 3771 3656 900.5
D 10 157 2730308 3027.91 3771 3656 900.5

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