ASTROSAT CZTI

Data Quality Report

Orbit 26284

Creation date: 2024-06-27T19:26:59.366068
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/AS1A09_079T03_9000003790_26284cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26284cztM0_level2_quad_clean.evt
Size (bytes)513,990,72094,792,320
Size490.2 MB 90.4 MB
Events in quadrant A3,638,944602,608
Events in quadrant B3,407,854626,899
Events in quadrant C3,643,536615,437
Events in quadrant D4,453,911591,600

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151140
B0142250
C0149870
D0175430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62151221.962993%
B62151221.962993%
C62161913.072716%
D62162063.314028%

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 8550 6217 56 56 0.65% 0.90%
B 8550 6217 32 32 0.37% 0.51%
C 8551 6218 8 8 0.09% 0.13%
D 8551 6218 133 133 1.56% 2.14%

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 0 13 475558 2913.31 820 804 163.0
A 13 254 10959 62.31 820 804 163.0
A 3 137 7149 38.93 820 804 163.0
B 5 172 170215 1098.64 824 804 154.2
B 12 111 17445 107.91 824 804 154.2
B 0 230 15485 95.2 824 804 154.2
C 4 254 210641 1129.55 808 812 185.8
C 3 233 152067 814.23 808 812 185.8
C 14 238 128850 689.25 808 812 185.8
D 1 52 1221145 6431.82 801 784 189.7
D 13 168 105113 549.86 801 784 189.7
D 2 234 28641 146.82 801 784 189.7

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