ASTROSAT CZTI

Data Quality Report

Orbit 20210323_C05_019T01_9000004270_level2

Creation date: 2021-03-30T10:53:49.376644
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/AS1C05_019T01_9000004270cztM0_level2_bc.evt modeM0/AS1C05_019T01_9000004270cztM0_level2_quad_clean.evt
Size (bytes)4,826,093,7601,613,554,560
Size4.5 GB 1.5 GB
Events in quadrant A22,452,24310,650,912
Events in quadrant B24,856,56010,945,427
Events in quadrant C22,803,48710,600,082
Events in quadrant D69,001,3169,577,838

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01470
B01470
C01470
D01470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021080
B021080
C021080
D021080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02175090
B02250920
C02205570
D03778560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10358014141.365128%
B10358017691.707859%
C10358019821.913497%
D1035801411713.629079%

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 117274 103574 278 278 0.24% 0.27%
B 117274 103570 75 75 0.06% 0.07%
C 117274 103573 24 24 0.02% 0.02%
D 117274 103574 3864 3864 3.29% 3.73%

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 0 13 1383388 1179.8 5406 5315 1168.1
A 13 254 180409 149.9 5406 5315 1168.1
A 12 96 134499 110.6 5406 5315 1168.1
B 10 245 1584863 1520.9 5515 5384 1038.5
B 0 229 1330586 1276.05 5515 5384 1038.5
B 0 189 186609 174.5 5515 5384 1038.5
C 3 233 1328498 1049.64 5322 5297 1260.6
C 10 22 422834 331.22 5322 5297 1260.6
C 7 247 256728 199.45 5322 5297 1260.6
D 7 80 34366118 29340.77 5056 4888 1171.1
D 8 195 7666966 6542.58 5056 4888 1171.1
D 7 238 4163367 3550.89 5056 4888 1171.1

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