ASTROSAT CZTI

Data Quality Report

Orbit 01345

Creation date: 2024-06-27T14:11:17.022927
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/AS1G04_002T02_9000000230_01345cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01345cztM0_level2_quad_clean.evt
Size (bytes)991,316,16098,804,160
Size945.4 MB 94.2 MB
Events in quadrant A7,205,313643,397
Events in quadrant B7,598,531656,151
Events in quadrant C7,238,546646,413
Events in quadrant D7,571,647616,781

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257573
B0269852
C0259082
D0268712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A615760.097450%
B6157150.243625%
C615760.097450%
D6157470.763359%

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 7437 6158 140 140 1.88% 2.27%
B 7437 6158 233 233 3.13% 3.78%
C 7437 6158 142 142 1.91% 2.31%
D 7437 6158 440 440 5.92% 7.15%

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 15 127 142560 319.53 1828 1842 440.4
A 4 32 19956 41.13 1828 1842 440.4
A 14 5 10496 19.65 1828 1842 440.4
B 15 22 59665 128.48 1936 1942 449.3
B 6 53 54978 118.05 1936 1942 449.3
B 12 52 44213 94.09 1936 1942 449.3
C 15 241 285484 580.89 1768 1830 488.3
C 3 111 19987 37.18 1768 1830 488.3
C 3 79 15535 28.07 1768 1830 488.3
D 12 22 668719 1291.28 1675 1733 516.5
D 10 84 343267 661.21 1675 1733 516.5
D 1 83 159894 306.2 1675 1733 516.5

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