ASTROSAT CZTI

Data Quality Report

Orbit 20161102_G06_027T01_9000000770_level2

Creation date: 2021-08-24T18:34:34.153959
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/AS1G06_027T01_9000000770cztM0_level2_bc.evt modeM0/AS1G06_027T01_9000000770cztM0_level2_quad_clean.evt
Size (bytes)1,014,128,640287,890,560
Size967.1 MB 274.6 MB
Events in quadrant A5,896,0701,802,009
Events in quadrant B5,197,3961,854,480
Events in quadrant C4,667,2891,848,671
Events in quadrant D13,325,9021,577,352

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0533620
B0509630
C0495250
D0761840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05020
B04880
C04900
D04960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A238528423.530102%
B239784802.001835%
C240042711.128979%
D23055234810.184342%

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 46104 25042 101 101 0.22% 0.40%
B 46104 25092 0 0 0.00% 0.00%
C 46104 25110 0 0 0.00% 0.00%
D 46103 24501 799 799 1.73% 3.26%

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 1117467 4314.63 1157 1131 258.7
A 8 192 146410 561.5 1157 1131 258.7
A 7 16 70749 269.07 1157 1131 258.7
B 15 204 234232 1013.16 1187 1152 230.1
B 0 219 93942 403.34 1187 1152 230.1
B 0 214 91481 392.64 1187 1152 230.1
C 9 68 49606 185.63 1161 1142 261.1
C 1 16 25819 94.52 1161 1142 261.1
C 8 128 21759 78.97 1161 1142 261.1
D 1 20 5621138 21758.81 1073 1028 258.3
D 2 63 1449721 5608.76 1073 1028 258.3
D 1 239 1015659 3928.24 1073 1028 258.3

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