ASTROSAT CZTI

Data Quality Report

Orbit 20181110_A05_101T05_9000002502_level2

Creation date: 2018-11-15T19:04:53.123645
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/AS1A05_101T05_9000002502cztM0_level2_bc.evt modeM0/AS1A05_101T05_9000002502cztM0_level2_quad_clean.evt
Size (bytes)1,319,405,760309,424,320
Size1.2 GB 295.1 MB
Events in quadrant A5,031,0302,112,850
Events in quadrant B6,362,3362,109,546
Events in quadrant C4,479,6492,081,326
Events in quadrant D22,537,8521,506,283

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04620
B04620
C04620
D04620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0479470
B0531530
C0465950
D01203140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A226372421.069046%
B226378393.706322%
C226372311.020453%
D22637873338.578434%

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 26263 22638 6 6 0.02% 0.03%
B 26262 22635 104 104 0.40% 0.46%
C 26262 22637 0 0 0.00% 0.00%
D 26262 22629 1392 1392 5.30% 6.15%

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 532317 2127.47 1137 1113 249.7
A 9 143 45274 176.87 1137 1113 249.7
A 13 228 25968 99.54 1137 1113 249.7
B 10 16 1337702 6092.89 1138 1107 219.4
B 15 35 203996 924.87 1138 1107 219.4
B 0 189 113546 512.55 1138 1107 219.4
C 3 233 125227 474.42 1106 1098 261.6
C 15 127 67542 253.95 1106 1098 261.6
C 0 207 12169 42.31 1106 1098 261.6
D 1 52 18775361 87733.17 910 878 214.0
D 10 70 122569 568.66 910 878 214.0
D 2 234 77588 358.47 910 878 214.0

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