ASTROSAT CZTI

Data Quality Report

Orbit 27305

Creation date: 2024-06-27T19:38:40.595296
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/AS1C05_013T06_9000003920_27305cztM0_level2.evt modeM0/AS1C05_013T06_9000003920_27305cztM0_level2_quad_clean.evt
Size (bytes)422,208,000105,393,600
Size402.6 MB 100.5 MB
Events in quadrant A2,640,396711,558
Events in quadrant B2,931,065713,534
Events in quadrant C2,680,291695,446
Events in quadrant D4,146,444672,057

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117930
B0126480
C0118010
D0162590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5711250.437752%
B57111352.363859%
C5711711.243215%
D57113205.603222%

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 6026 5712 0 0 0.00% 0.00%
B 6026 5712 40 40 0.66% 0.70%
C 6026 5712 3 3 0.05% 0.05%
D 6026 5712 240 240 3.98% 4.20%

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 13 248 21722 152.74 676 663 137.9
A 13 254 9693 65.5 676 663 137.9
A 3 137 6377 41.44 676 663 137.9
B 5 172 178312 1395.89 670 653 127.3
B 10 247 36555 282.08 670 653 127.3
B 10 245 35636 274.86 670 653 127.3
C 14 238 103954 669.09 652 654 154.4
C 2 16 27722 175.32 652 654 154.4
C 15 208 6420 37.35 652 654 154.4
D 1 52 1322213 8314.68 642 627 158.9
D 2 250 198741 1246.42 642 627 158.9
D 12 233 62045 386.41 642 627 158.9

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