ASTROSAT CZTI

Data Quality Report

Orbit 38590

Creation date: 2024-06-27T21:53:48.130568
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_052T04_9000005388_38590cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38590cztM0_level2_quad_clean.evt
Size (bytes)492,042,24093,934,080
Size469.2 MB 89.6 MB
Events in quadrant A2,854,857660,032
Events in quadrant B3,105,564674,357
Events in quadrant C7,674,605574,754
Events in quadrant D4,171,960567,536

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115443
B0124832
C0264812
D0158522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A524870.133384%
B5248921.753049%
C524893717.854421%
D52483326.326220%

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 7131 5249 4 4 0.06% 0.08%
B 7131 5248 56 56 0.79% 1.07%
C 7131 5248 917 917 12.86% 17.47%
D 7131 5248 346 346 4.85% 6.59%

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 402445 3193.3 626 615 125.8
A 13 6 14520 110.5 626 615 125.8
A 13 248 14140 107.48 626 615 125.8
B 5 184 448222 3836.24 620 603 116.7
B 15 32 45775 387.14 620 603 116.7
B 5 172 45096 381.32 620 603 116.7
C 14 254 5104838 37922.73 588 593 134.6
C 15 214 208995 1548.35 588 593 134.6
C 0 10 44399 325.46 588 593 134.6
D 1 47 1297696 9096.36 597 580 142.6
D 10 118 192921 1348.84 597 580 142.6
D 2 250 74247 516.61 597 580 142.6

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