ASTROSAT CZTI

Data Quality Report

Orbit 25027

Creation date: 2024-06-27T19:12:56.264104
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_134T03_9000003670_25027cztM0_level2.evt modeM0/AS1A07_134T03_9000003670_25027cztM0_level2_quad_clean.evt
Size (bytes)529,087,680114,624,000
Size504.6 MB 109.3 MB
Events in quadrant A3,227,570764,872
Events in quadrant B3,599,066792,551
Events in quadrant C3,796,595759,046
Events in quadrant D4,986,721728,922

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132502
B0147034
C0152652
D0188482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6097270.442841%
B6096751.230315%
C60961392.280184%
D60963866.332021%

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 7492 6098 0 0 0.00% 0.00%
B 7491 6097 12 12 0.16% 0.20%
C 7491 6097 22 22 0.29% 0.36%
D 7491 6097 243 243 3.24% 3.99%

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 11 208 17457 100.06 833 818 166.3
A 13 254 8646 47.07 833 818 166.3
A 0 226 7044 37.44 833 818 166.3
B 3 64 176387 1129.98 839 822 155.4
B 4 80 89987 573.89 839 822 155.4
B 5 172 25620 159.61 839 822 155.4
C 7 247 227598 1180.68 821 830 192.1
C 2 16 153369 794.2 821 830 192.1
C 14 238 130452 674.88 821 830 192.1
D 1 52 1169281 6047.98 802 782 193.2
D 8 195 495514 2560.66 802 782 193.2
D 7 238 296329 1529.71 802 782 193.2

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