ASTROSAT CZTI

Data Quality Report

Orbit 23501

Creation date: 2024-06-27T18:55:21.099614
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_23501cztM0_level2.evt modeM0/AS1A07_112T01_9000003478_23501cztM0_level2_quad_clean.evt
Size (bytes)292,962,24049,818,240
Size279.4 MB 47.5 MB
Events in quadrant A1,952,364308,056
Events in quadrant B2,107,300315,352
Events in quadrant C1,985,988303,939
Events in quadrant D2,549,745294,673

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0836323
B0883015
C0842330
D01036328

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4055130.320592%
B4059260.640552%
C4051260.641817%
D4056731.799803%

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 4941 4065 0 0 0.00% 0.00%
B 4941 4067 3 3 0.06% 0.07%
C 4941 4065 0 0 0.00% 0.00%
D 4941 4065 35 35 0.71% 0.86%

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 13 254 7170 64.76 506 495 103.1
A 0 226 4333 37.24 506 495 103.1
A 3 137 4238 36.32 506 495 103.1
B 0 189 55258 560.9 502 489 97.6
B 0 219 35182 355.3 502 489 97.6
B 0 230 16518 164.16 502 489 97.6
C 14 238 76123 657.8 484 487 115.0
C 7 247 6634 53.46 484 487 115.0
C 2 16 4931 38.65 484 487 115.0
D 1 52 491906 4067.18 488 472 120.8
D 9 85 118937 980.43 488 472 120.8
D 12 233 42424 347.2 488 472 120.8

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