ASTROSAT CZTI

Data Quality Report

Orbit 33886

Creation date: 2024-06-27T20:53:46.874291
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/AS1T04_090T01_9000004840_33886cztM0_level2.evt modeM0/AS1T04_090T01_9000004840_33886cztM0_level2_quad_clean.evt
Size (bytes)489,404,16071,167,680
Size466.7 MB 67.9 MB
Events in quadrant A2,553,474482,230
Events in quadrant B3,046,681480,711
Events in quadrant C3,159,736463,937
Events in quadrant D5,718,641373,260

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103503
B0119242
C0121862
D0205722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A505440.079145%
B5054961.899486%
C50541022.018203%
D5054115022.754254%

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 7117 5055 0 0 0.00% 0.00%
B 7117 5055 54 54 0.76% 1.07%
C 7117 5055 85 85 1.19% 1.68%
D 7117 5055 883 883 12.41% 17.47%

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 6 16598 123.82 653 642 128.9
A 10 83 11422 83.65 653 642 128.9
A 13 254 8356 59.86 653 642 128.9
B 5 172 287878 2408.35 637 622 119.3
B 5 255 141009 1177.0 637 622 119.3
B 4 232 23444 191.34 637 622 119.3
C 0 10 277948 1965.81 624 630 141.1
C 15 214 222263 1571.08 624 630 141.1
C 3 233 203495 1438.04 624 630 141.1
D 12 235 2526768 18576.0 560 545 136.0
D 8 195 506315 3719.06 560 545 136.0
D 2 249 164440 1205.16 560 545 136.0

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