ASTROSAT CZTI

Data Quality Report

Orbit 30991

Creation date: 2024-06-27T20:22:01.160764
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_30991cztM0_level2.evt modeM0/AS1A10_071T48_9000004478_30991cztM0_level2_quad_clean.evt
Size (bytes)562,285,44097,882,560
Size536.2 MB 93.3 MB
Events in quadrant A3,248,348659,618
Events in quadrant B5,249,062671,780
Events in quadrant C3,779,449608,905
Events in quadrant D4,334,087592,513

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133222
B0193892
C0150302
D0169062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6178150.242797%
B6178841.359663%
C61782143.463904%
D6178560.906442%

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 7593 6179 0 0 0.00% 0.00%
B 7593 6179 7 7 0.09% 0.11%
C 7593 6179 133 133 1.75% 2.15%
D 7593 6179 67 67 0.88% 1.08%

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 11409 63.54 841 827 166.6
A 3 137 7844 42.13 841 827 166.6
A 0 226 7322 39.0 841 827 166.6
B 6 159 1801860 11483.82 843 827 156.8
B 0 229 39768 248.3 843 827 156.8
B 0 190 29069 180.08 843 827 156.8
C 0 10 484389 2638.75 788 795 183.3
C 14 238 129895 704.44 788 795 183.3
C 3 233 38305 204.67 788 795 183.3
D 12 218 459334 2434.55 793 773 188.4
D 8 195 277888 1471.23 793 773 188.4
D 13 174 251109 1329.06 793 773 188.4

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