ASTROSAT CZTI

Data Quality Report

Orbit 34229

Creation date: 2022-01-26T22:27:15.878449
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_003T01_9000004886_34229cztM0_level2.evt modeM0/AS1T05_003T01_9000004886_34229cztM0_level2_quad_clean.evt
Size (bytes)448,701,12068,613,120
Size427.9 MB 65.4 MB
Events in quadrant A2,547,468430,472
Events in quadrant B2,789,376438,778
Events in quadrant C3,536,219427,973
Events in quadrant D4,341,693394,604

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112643
B0117992
C0138612
D0166792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5509100.181521%
B5509530.962062%
C55092193.975313%
D55093566.462153%

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 7152 5510 4 4 0.06% 0.07%
B 7152 5510 33 33 0.46% 0.60%
C 7152 5510 150 150 2.10% 2.72%
D 7152 5510 307 307 4.29% 5.57%

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 35126 269.53 634 621 128.0
A 9 143 24639 187.61 634 621 128.0
A 10 83 23928 182.06 634 621 128.0
B 5 172 150545 1226.3 636 620 122.3
B 15 201 77395 627.98 636 620 122.3
B 0 190 17026 134.19 636 620 122.3
C 14 254 483836 3382.03 619 624 142.9
C 0 10 300030 2095.56 619 624 142.9
C 15 214 236735 1652.55 619 624 142.9
D 8 195 930354 6212.91 610 594 149.6
D 1 52 768976 5134.54 610 594 149.6
D 7 80 107694 715.67 610 594 149.6

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