ASTROSAT CZTI

Data Quality Report

Orbit 20190309_A05_104T07_9000002780_level2

Creation date: 2019-03-11T12:03:37.909187
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_104T07_9000002780cztM0_level2_bc.evt modeM0/AS1A05_104T07_9000002780cztM0_level2_quad_clean.evt
Size (bytes)1,145,983,680322,378,560
Size1.1 GB 307.4 MB
Events in quadrant A7,171,7131,988,236
Events in quadrant B5,797,7202,058,273
Events in quadrant C5,144,9041,996,962
Events in quadrant D14,767,5091,883,386

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0623830
B0563310
C0547720
D0859530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05440
B05440
C05440
D05440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2670410033.755992%
B267044351.628969%
C267043811.426753%
D26704290510.878520%

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 29339 26705 47 47 0.16% 0.18%
B 29339 26702 15 15 0.05% 0.06%
C 29339 26702 1 1 0.00% 0.00%
D 29339 26701 1366 1366 4.66% 5.12%

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 14 111 1656357 5698.26 1313 1280 290.5
A 0 13 373198 1280.47 1313 1280 290.5
A 9 143 64177 216.55 1313 1280 290.5
B 4 80 377125 1465.62 1344 1307 256.4
B 0 230 155257 600.38 1344 1307 256.4
B 3 64 44094 166.86 1344 1307 256.4
C 9 221 68136 216.94 1297 1282 308.2
C 3 233 61767 196.28 1297 1282 308.2
C 9 54 30440 94.62 1297 1282 308.2
D 1 52 9063254 30450.97 1261 1215 297.6
D 7 238 661783 2219.69 1261 1215 297.6
D 2 234 99822 331.35 1261 1215 297.6

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