ASTROSAT CZTI

Data Quality Report

Orbit 39286

Creation date: 2024-06-27T22:02:42.566530
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/AS1A12_025T12_9000005458_39286cztM0_level2.fits modeM0/AS1A12_025T12_9000005458_39286cztM0_level2_quad_clean.evt
Size (bytes)510,304,32092,560,320
Size486.7 MB 88.3 MB
Events in quadrant A2,998,577678,646
Events in quadrant B2,738,434702,511
Events in quadrant C2,828,296660,963
Events in quadrant D9,905,885383,308

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120503
B0115012
C0114432
D0331232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5390150.278293%
B5390500.927644%
C539090.166976%
D5390226542.022263%

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 7362 5391 7 7 0.10% 0.13%
B 7362 5391 28 28 0.38% 0.52%
C 7362 5391 15 15 0.20% 0.28%
D 7362 5391 2338 2338 31.76% 43.37%

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 10 83 425054 3287.37 638 627 129.1
A 15 222 94780 729.26 638 627 129.1
A 13 248 11229 82.12 638 627 129.1
B 5 172 158631 1308.34 635 619 120.8
B 5 255 62618 513.35 635 619 120.8
B 5 184 18673 149.49 635 619 120.8
C 15 214 227430 1585.42 621 626 143.1
C 9 187 170969 1190.74 621 626 143.1
C 8 222 4403 26.4 621 626 143.1
D 12 235 7635561 62240.24 506 491 122.7
D 2 249 102541 831.9 506 491 122.7
D 13 249 87960 713.04 506 491 122.7

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