ASTROSAT CZTI

Data Quality Report

Orbit 20190923_A06_009T05_9000003196_level2

Creation date: 2019-09-24T17:14:37.952376
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/AS1A06_009T05_9000003196cztM0_level2_bc.evt modeM0/AS1A06_009T05_9000003196cztM0_level2_quad_clean.evt
Size (bytes)811,713,600267,684,480
Size774.1 MB 255.3 MB
Events in quadrant A4,424,2111,705,993
Events in quadrant B4,919,0091,728,394
Events in quadrant C4,189,5511,669,608
Events in quadrant D9,613,3921,557,299

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04300
B04300
C04300
D04300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430600
B0445710
C0428170
D0620160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A209951290.614432%
B209951520.723982%
C209951720.819243%
D2099515397.330317%

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 24710 20995 0 0 0.00% 0.00%
B 24710 20995 5 5 0.02% 0.02%
C 24710 20995 0 0 0.00% 0.00%
D 24710 20995 414 414 1.68% 1.97%

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 15 174 47298 189.36 1124 1105 243.9
A 13 254 31058 122.79 1124 1105 243.9
A 12 96 12745 47.72 1124 1105 243.9
B 0 228 202141 933.03 1137 1111 215.5
B 0 230 148046 681.96 1137 1111 215.5
B 3 64 55977 254.65 1137 1111 215.5
C 3 233 22116 82.86 1084 1079 253.9
C 13 61 6427 21.06 1084 1079 253.9
C 14 238 3722 10.41 1084 1079 253.9
D 1 52 3737651 14920.97 1071 1032 250.4
D 2 136 764131 3047.19 1071 1032 250.4
D 13 153 213970 850.3 1071 1032 250.4

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