ASTROSAT CZTI

Data Quality Report

Orbit 42549

Creation date: 2024-06-27T22:41:30.002249
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/AS1A12_102T01_9000005812_42549cztM0_level2.fits modeM0/AS1A12_102T01_9000005812_42549cztM0_level2_quad_clean.evt
Size (bytes)332,968,32083,367,360
Size317.5 MB 79.5 MB
Events in quadrant A2,718,101568,817
Events in quadrant B2,374,394573,534
Events in quadrant C2,283,304542,808
Events in quadrant D4,556,858485,378

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110572
B0106622
C0101062
D0170352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5042110.218167%
B5042571.130504%
C504220.039667%
D50423346.624355%

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 7075 5043 3 3 0.04% 0.06%
B 7075 5043 41 41 0.58% 0.81%
C 7075 5043 0 0 0.00% 0.00%
D 7075 5043 316 316 4.47% 6.27%

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 10 83 538436 4872.58 544 534 110.4
A 2 79 39942 356.98 544 534 110.4
A 13 248 25105 222.58 544 534 110.4
B 5 172 180898 1749.09 537 523 103.1
B 0 245 51803 497.26 537 523 103.1
B 15 85 18594 175.23 537 523 103.1
C 15 214 216159 1763.76 528 530 122.3
C 14 254 6670 50.22 528 530 122.3
C 13 61 3559 24.78 528 530 122.3
D 2 16 1107309 8646.58 523 509 128.0
D 2 249 574159 4481.49 523 509 128.0
D 1 52 276715 2157.78 523 509 128.0

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