ASTROSAT CZTI

Data Quality Report

Orbit 11874

Creation date: 2024-06-27T16:19:28.777285
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/AS1A04_145T01_9000001756_11874cztM0_level2.evt modeM0/AS1A04_145T01_9000001756_11874cztM0_level2_quad_clean.evt
Size (bytes)454,668,48077,040,000
Size433.6 MB 73.5 MB
Events in quadrant A2,827,625498,318
Events in quadrant B3,337,113491,707
Events in quadrant C2,496,401495,011
Events in quadrant D4,725,694453,296

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121030
B0136410
C0115370
D0178980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56381202.128414%
B56382744.859879%
C5638631.117418%
D56384447.875133%

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 5639 5639 5 5 0.09% 0.09%
B 5639 5639 95 95 1.68% 1.68%
C 5639 5639 2 2 0.04% 0.04%
D 5639 5639 441 441 7.82% 7.82%

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 8 15 99905 749.44 639 624 132.5
A 1 162 88172 660.87 639 624 132.5
A 7 144 47427 353.3 639 624 132.5
B 4 239 635012 5206.65 638 622 121.8
B 15 204 65282 530.69 638 622 121.8
B 15 33 35521 286.43 638 622 121.8
C 7 247 37073 249.57 625 627 146.0
C 8 128 8382 53.1 625 627 146.0
C 0 207 7622 47.9 625 627 146.0
D 13 122 1304674 8934.1 607 589 146.0
D 1 52 580153 3970.51 607 589 146.0
D 8 195 287384 1964.79 607 589 146.0

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