ASTROSAT CZTI

Data Quality Report

Orbit 20180830_T02_058T01_9000002338_level2

Creation date: 2018-08-31T09:28:04.863974
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/AS1T02_058T01_9000002338cztM0_level2_bc.evt modeM0/AS1T02_058T01_9000002338cztM0_level2_quad_clean.evt
Size (bytes)881,035,200333,564,480
Size840.2 MB 318.1 MB
Events in quadrant A7,184,7782,107,223
Events in quadrant B6,494,9532,144,974
Events in quadrant C5,574,4472,060,255
Events in quadrant D5,677,8452,030,366

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05260
B05260
C05260
D05260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0615970
B0567940
C0539050
D0536440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2557611944.668439%
B255774021.571725%
C255773831.497439%
D255772811.098643%

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 29153 25573 65 65 0.22% 0.25%
B 29153 25578 9 9 0.03% 0.04%
C 29153 25581 4 4 0.01% 0.02%
D 29153 25578 6 6 0.02% 0.02%

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 15 239 1750272 5732.8 1331 1300 305.1
A 14 254 175754 571.83 1331 1300 305.1
A 10 253 99118 320.63 1331 1300 305.1
B 7 220 333689 1257.28 1367 1340 264.3
B 10 245 191902 720.9 1367 1340 264.3
B 0 229 142007 532.14 1367 1340 264.3
C 7 247 442657 1417.67 1309 1306 311.3
C 10 22 40350 125.41 1309 1306 311.3
C 0 207 21946 66.3 1309 1306 311.3
D 1 52 156745 444.14 1331 1288 350.0
D 2 234 112294 317.14 1331 1288 350.0
D 2 152 102361 288.76 1331 1288 350.0

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