ASTROSAT CZTI

Data Quality Report

Orbit 41314

Creation date: 2024-06-27T22:27:24.239824
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_025T14_9000005646_41314cztM0_level2.fits modeM0/AS1A12_025T14_9000005646_41314cztM0_level2_quad_clean.evt
Size (bytes)356,002,56090,201,600
Size339.5 MB 86.0 MB
Events in quadrant A2,906,628619,806
Events in quadrant B3,109,345639,263
Events in quadrant C3,492,601565,414
Events in quadrant D3,261,445539,950

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116863
B0126632
C0133482
D0133122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5238100.190913%
B5238811.546392%
C52383166.032837%
D52381673.188240%

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 9094 5240 4 4 0.04% 0.08%
B 9094 5240 51 51 0.56% 0.97%
C 9094 5240 313 313 3.44% 5.97%
D 9094 5240 150 150 1.65% 2.86%

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 502847 4008.02 612 602 125.3
A 2 79 17473 134.63 612 602 125.3
A 12 189 8754 65.05 612 602 125.3
B 5 255 508746 4313.11 608 592 117.8
B 0 229 179278 1516.65 608 592 117.8
B 0 245 19105 157.13 608 592 117.8
C 0 10 1044344 7817.84 568 572 133.5
C 15 214 214781 1604.42 568 572 133.5
C 15 159 18346 133.13 568 572 133.5
D 2 249 470270 3261.11 580 563 144.0
D 13 249 322335 2234.02 580 563 144.0
D 5 222 235027 1627.85 580 563 144.0

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