ASTROSAT CZTI

Data Quality Report

Orbit 30988

Creation date: 2024-06-27T20:21:58.504138
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/AS1A10_071T48_9000004478_30988cztM0_level2.evt modeM0/AS1A10_071T48_9000004478_30988cztM0_level2_quad_clean.evt
Size (bytes)377,665,92043,459,200
Size360.2 MB 41.4 MB
Events in quadrant A2,009,728287,226
Events in quadrant B4,353,197209,524
Events in quadrant C2,591,043266,224
Events in quadrant D2,210,309268,984

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085601
B0157761
C0104021
D091231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4015390.971357%
B401579819.875467%
C40151924.782067%
D4014501.245640%

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 5145 4015 0 0 0.00% 0.00%
B 5145 4015 550 550 10.69% 13.70%
C 5145 4015 71 71 1.38% 1.77%
D 5144 4014 14 14 0.27% 0.35%

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 7529 66.24 520 510 106.0
A 3 137 5188 44.15 520 510 106.0
A 0 226 4466 37.34 520 510 106.0
B 5 172 1402211 16102.92 454 443 87.1
B 6 159 1069797 12284.29 454 443 87.1
B 0 155 38393 435.95 454 443 87.1
C 0 10 535110 4604.79 491 494 116.1
C 14 238 79306 678.83 491 494 116.1
C 3 233 46135 393.12 491 494 116.1
D 8 195 169593 1388.65 502 490 121.8
D 2 250 68550 558.9 502 490 121.8
D 2 234 20064 160.74 502 490 121.8

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