ASTROSAT CZTI

Data Quality Report

Orbit 23502

Creation date: 2024-06-27T18:55:21.984618
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/AS1A07_112T01_9000003478_23502cztM0_level2.evt modeM0/AS1A07_112T01_9000003478_23502cztM0_level2_quad_clean.evt
Size (bytes)370,690,56066,758,400
Size353.5 MB 63.7 MB
Events in quadrant A2,521,833417,282
Events in quadrant B2,654,590423,401
Events in quadrant C2,561,467409,791
Events in quadrant D3,123,587396,474

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015850
B015642
C016050
D015642

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155344508
B0167265398
C0155904522
D0197556868

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091
B0104
C082
D092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5401130.240696%
B5302250.471520%
C5398280.518711%
D5234721.375621%

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 8518 5965 0 0 0.00% 0.00%
B 8515 5806 3 3 0.04% 0.05%
C 8518 5938 0 0 0.00% 0.00%
D 8498 5705 36 36 0.42% 0.63%

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 13 254 9588 67.83 653 639 131.9
A 0 226 5599 37.59 653 639 131.9
A 3 137 5540 37.15 653 639 131.9
B 0 189 79317 646.54 635 618 121.7
B 0 219 35860 289.52 635 618 121.7
B 0 230 17493 138.63 635 618 121.7
C 14 238 98347 665.27 624 627 146.9
C 7 247 8931 56.53 624 627 146.9
C 8 128 6030 36.78 624 627 146.9
D 1 52 601704 4006.87 610 592 150.0
D 9 85 121787 807.86 610 592 150.0
D 12 233 42612 280.1 610 592 150.0

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