ASTROSAT CZTI

Data Quality Report

Orbit 20201116_A10_009T02_9000004014_level2

Creation date: 2022-09-12T18:30:11.083509
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A10_009T02_9000004014cztM0_level2_bc.evt modeM0/AS1A10_009T02_9000004014cztM0_level2_quad_clean.evt
Size (bytes)976,415,040346,374,720
Size931.2 MB 330.3 MB
Events in quadrant A5,119,3142,355,846
Events in quadrant B7,617,6632,364,195
Events in quadrant C6,314,1032,196,037
Events in quadrant D9,018,5142,063,268

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04460
B04460
C04460
D04460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0471190
B0568830
C0522770
D0620790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A219722581.174222%
B2197210014.555798%
C219725602.548698%
D2197217007.737120%

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 27026 21967 0 0 0.00% 0.00%
B 27026 21968 89 89 0.33% 0.41%
C 27026 21967 6 6 0.02% 0.03%
D 27026 21972 556 556 2.06% 2.53%

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 13 254 34889 118.7 1319 1298 283.0
A 8 192 29565 99.89 1319 1298 283.0
A 0 226 8363 24.97 1319 1298 283.0
B 3 64 2286374 9280.57 1314 1287 246.2
B 5 255 90444 362.1 1314 1287 246.2
B 4 52 85377 341.52 1314 1287 246.2
C 3 233 1334899 4640.37 1230 1229 287.4
C 10 22 153507 529.84 1230 1229 287.4
C 6 112 85509 293.24 1230 1229 287.4
D 1 52 4067231 14708.76 1206 1172 276.4
D 2 250 90576 323.41 1206 1172 276.4
D 7 223 90520 323.21 1206 1172 276.4

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