ASTROSAT CZTI

Data Quality Report

Orbit 14604

Creation date: 2024-06-27T16:57:23.125633
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/AS1G08_055T02_9000002148_14604cztM0_level2.evt modeM0/AS1G08_055T02_9000002148_14604cztM0_level2_quad_clean.evt
Size (bytes)703,851,840105,445,440
Size671.2 MB 100.6 MB
Events in quadrant A9,002,024667,263
Events in quadrant B3,432,498724,787
Events in quadrant C3,902,751712,689
Events in quadrant D4,554,423649,442

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311343
B0142642
C0159202
D0176102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6288127920.340331%
B62881191.892494%
C62881021.622137%
D62886279.971374%

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 8919 6290 487 487 5.46% 7.74%
B 8919 6290 3 3 0.03% 0.05%
C 8919 6291 2 2 0.02% 0.03%
D 8919 6290 399 399 4.47% 6.34%

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 23 5177490 32136.39 810 797 161.1
A 0 226 316096 1957.34 810 797 161.1
A 8 15 159955 988.04 810 797 161.1
B 0 205 37647 229.76 853 833 160.2
B 12 111 18511 110.33 853 833 160.2
B 0 214 18237 108.62 853 833 160.2
C 3 233 602112 3092.15 846 854 194.4
C 13 61 6023 26.58 846 854 194.4
C 14 225 2012 5.96 846 854 194.4
D 10 199 1343590 7181.21 803 785 187.0
D 2 152 72349 382.72 803 785 187.0
D 12 110 56287 296.82 803 785 187.0

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