ASTROSAT CZTI

Data Quality Report

Orbit 33967

Creation date: 2024-06-27T20:54:44.587935
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/AS1A11_034T02_9000004856_33967cztM0_level2.evt modeM0/AS1A11_034T02_9000004856_33967cztM0_level2_quad_clean.evt
Size (bytes)452,036,16060,166,080
Size431.1 MB 57.4 MB
Events in quadrant A2,473,156376,222
Events in quadrant B2,931,094376,292
Events in quadrant C3,019,251365,973
Events in quadrant D4,914,176339,361

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108082
B0120332
C0121152
D0182922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5197200.384837%
B51971122.155089%
C5197681.308447%
D51973647.004041%

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 6510 5198 3 3 0.05% 0.06%
B 6510 5198 59 59 0.91% 1.14%
C 6510 5198 56 56 0.86% 1.08%
D 6510 5198 277 277 4.25% 5.33%

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 15 169 70879 571.82 605 592 122.9
A 14 238 28947 230.68 605 592 122.9
A 13 6 16783 131.72 605 592 122.9
B 5 172 419335 3596.37 599 584 116.4
B 0 190 39228 331.89 599 584 116.4
B 4 251 38328 324.16 599 584 116.4
C 0 10 283503 2076.41 586 590 136.3
C 15 214 228005 1669.09 586 590 136.3
C 3 233 121951 890.72 586 590 136.3
D 8 195 989553 6886.27 572 554 143.6
D 2 250 466917 3247.22 572 554 143.6
D 7 238 413625 2876.16 572 554 143.6

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