ASTROSAT CZTI

Data Quality Report

Orbit 20170214_A02_058T02_9000001030_level2

Creation date: 2017-09-23T03:58:04.589623
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/AS1A02_058T02_9000001030cztM0_level2.evt modeM0/AS1A02_058T02_9000001030cztM0_level2_quad_clean.evt
Size (bytes)738,809,280174,012,480
Size704.6 MB 166.0 MB
Events in quadrant A5,221,2901,125,246
Events in quadrant B5,407,5931,149,685
Events in quadrant C5,149,8141,144,770
Events in quadrant D5,848,8721,088,117

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232010
B0236420
C0229640
D0252890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110241601.451379%
B110241961.777939%
C110241261.142961%
D110242592.349419%

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 13494 11025 1 1 0.01% 0.01%
B 13494 11025 6 6 0.04% 0.05%
C 13494 11026 1 1 0.01% 0.01%
D 13494 11026 105 105 0.78% 0.95%

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 15 234 45587 164.04 1330 1304 269.9
A 15 239 26627 93.81 1330 1304 269.9
A 0 23 17769 60.99 1330 1304 269.9
B 0 214 75674 290.69 1349 1320 255.8
B 4 173 72954 280.06 1349 1320 255.8
B 4 81 29215 109.06 1349 1320 255.8
C 1 16 20075 61.51 1314 1322 304.9
C 13 61 10167 29.01 1314 1322 304.9
C 8 222 6808 17.99 1314 1322 304.9
D 2 14 229174 713.81 1297 1259 319.3
D 2 152 208215 648.17 1297 1259 319.3
D 14 34 148568 461.36 1297 1259 319.3

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