ASTROSAT CZTI

Data Quality Report

Orbit 20221206_A12_093T01_9000005410_level2

Creation date: 2022-12-07T17:25:48.517469
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/AS1A12_093T01_9000005410cztM0_level2.fits modeM0/AS1A12_093T01_9000005410cztM0_level2_quad_clean.evt
Size (bytes)217,287,360240,540,480
Size207.2 MB 229.4 MB
Events in quadrant A1,276,9401,423,730
Events in quadrant B1,254,5181,484,481
Events in quadrant C1,299,3121,434,754
Events in quadrant D1,109,2841,301,518

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04840
B04840
C04840
D04840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0646260
B0516680
C0485560
D0645520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2384316406.878329%
B238431820.763327%
C23843250.104853%
D238437213.023948%

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 32206 23838 0 0 0.00% 0.00%
B 32206 23841 0 0 0.00% 0.00%
C 32206 23842 0 0 0.00% 0.00%
D 32206 23838 0 0 0.00% 0.00%

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 9 19 1079 8.96 332 313 85.5
A 7 110 1014 8.2 332 313 85.5
A 0 29 1002 8.06 332 313 85.5
B 2 9 1021 10.6 331 316 66.5
B 5 128 904 8.84 331 316 66.5
B 3 17 897 8.73 331 316 66.5
C 1 81 1059 8.18 343 321 90.2
C 1 80 1054 8.13 343 321 90.2
C 3 202 1021 7.76 343 321 90.2
D 4 160 825 6.27 317 289 85.5
D 6 38 824 6.25 317 289 85.5
D 10 189 820 6.21 317 289 85.5

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