ASTROSAT CZTI

Data Quality Report

Orbit 35699

Creation date: 2022-09-12T15:22:27.925535
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/AS1A09_142T03_9000005114_35699cztM0_level2.evt modeM0/AS1A09_142T03_9000005114_35699cztM0_level2_quad_clean.evt
Size (bytes)369,063,36064,327,680
Size352.0 MB 61.3 MB
Events in quadrant A2,346,712395,623
Events in quadrant B3,367,515390,046
Events in quadrant C2,676,662409,973
Events in quadrant D2,442,529398,224

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103603
B0132802
C0110002
D0107582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A504280.158667%
B50422775.493852%
C5042741.467672%
D5042220.436335%

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 6955 5043 1 1 0.01% 0.02%
B 6955 5043 240 240 3.45% 4.76%
C 6955 5043 50 50 0.72% 0.99%
D 6955 5043 28 28 0.40% 0.56%

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 134700 1165.69 567 556 115.1
A 10 255 13375 111.39 567 556 115.1
A 13 6 7983 64.54 567 556 115.1
B 5 172 856370 8049.24 555 540 106.3
B 10 244 245767 2306.4 555 540 106.3
B 5 255 37878 351.17 555 540 106.3
C 0 10 266277 2039.73 560 564 130.3
C 15 214 213846 1637.25 560 564 130.3
C 4 254 9701 70.14 560 564 130.3
D 13 249 135820 993.19 558 541 136.2
D 12 6 63867 464.93 558 541 136.2
D 2 153 33662 243.17 558 541 136.2

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