ASTROSAT CZTI

Data Quality Report

Orbit 20220430_T05_028T01_9000005100_level2

Creation date: 2022-05-11T11:09:48.300799
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/AS1T05_028T01_9000005100cztM0_level2_bc.evt modeM0/AS1T05_028T01_9000005100cztM0_level2_quad_clean.evt
Size (bytes)3,588,137,280835,032,960
Size3.3 GB 796.3 MB
Events in quadrant A32,863,2265,161,970
Events in quadrant B26,712,6305,340,393
Events in quadrant C21,378,4215,362,391
Events in quadrant D23,419,2355,093,649

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01883610
B01852180
C01525730
D01629050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012900
B012900
C012890
D012900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63082928914.725278%
B6316157379.083137%
C6316315702.485632%
D6317120953.316395%

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 85793 63208 6399 6399 7.46% 10.12%
B 85792 63206 508 508 0.59% 0.80%
C 85792 63217 261 261 0.30% 0.41%
D 85792 63226 473 473 0.55% 0.75%

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 15 169 18703701 27481.67 3084 3038 680.5
A 10 83 1211899 1776.49 3084 3038 680.5
A 7 16 871431 1276.15 3084 3038 680.5
B 5 172 12567088 20170.47 3171 3106 622.9
B 5 200 600450 958.99 3171 3106 622.9
B 0 189 431368 687.54 3171 3106 622.9
C 0 10 4797091 6563.12 3182 3172 730.4
C 15 214 2430843 3323.61 3182 3172 730.4
C 9 187 1179751 1610.8 3182 3172 730.4
D 7 80 2603495 3471.31 3171 3089 749.1
D 1 52 1837239 2448.43 3171 3089 749.1
D 14 52 1338832 1783.1 3171 3089 749.1

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