ASTROSAT CZTI

Data Quality Report

Orbit 42716

Creation date: 2024-06-27T22:43:23.809505
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/AS1A05_013T01_9000005822_42716cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42716cztM0_level2_quad_clean.evt
Size (bytes)314,988,48089,723,520
Size300.4 MB 85.6 MB
Events in quadrant A3,130,615604,222
Events in quadrant B2,646,265611,626
Events in quadrant C2,577,267583,541
Events in quadrant D2,878,801533,361

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127142
B0117312
C0112172
D0125752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5477160.292131%
B5477480.876392%
C5477100.182582%
D54771112.026657%

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 7150 5478 8 8 0.11% 0.15%
B 7150 5478 31 31 0.43% 0.57%
C 7150 5478 6 6 0.08% 0.11%
D 7150 5478 113 113 1.58% 2.06%

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 587743 4813.09 596 583 122.0
A 12 189 173209 1415.06 596 583 122.0
A 15 237 17152 135.82 596 583 122.0
B 5 255 119971 1024.78 593 576 116.5
B 15 85 78800 671.41 593 576 116.5
B 5 172 46777 396.55 593 576 116.5
C 15 214 229349 1685.03 577 581 135.8
C 0 239 56369 410.92 577 581 135.8
C 3 233 27433 197.78 577 581 135.8
D 12 233 243173 1733.04 572 556 140.0
D 2 249 172600 1228.93 572 556 140.0
D 12 6 127075 903.74 572 556 140.0

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