ASTROSAT CZTI

Data Quality Report

Orbit 34579

Creation date: 2022-02-19T12:28:14.502435
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/AS1A05_167T01_9000004940_34579cztM0_level2.evt modeM0/AS1A05_167T01_9000004940_34579cztM0_level2_quad_clean.evt
Size (bytes)464,667,84072,322,560
Size443.1 MB 69.0 MB
Events in quadrant A2,666,265456,673
Events in quadrant B3,227,454471,258
Events in quadrant C2,799,011458,270
Events in quadrant D5,007,295419,567

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112443
B0129712
C0113572
D0186482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5481160.291918%
B54811272.317095%
C5481100.182448%
D54812785.072067%

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 7333 5482 6 6 0.08% 0.11%
B 7333 5482 83 83 1.13% 1.51%
C 7333 5482 5 5 0.07% 0.09%
D 7333 5482 203 203 2.77% 3.70%

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 41694 307.5 667 655 133.5
A 9 143 34182 251.21 667 655 133.5
A 13 6 10643 74.84 667 655 133.5
B 5 172 260631 2076.72 657 642 125.2
B 0 229 155218 1234.71 657 642 125.2
B 0 245 119686 950.89 657 642 125.2
C 15 214 232661 1554.36 644 649 149.3
C 0 10 40861 269.4 644 649 149.3
C 3 233 7716 47.35 644 649 149.3
D 8 195 1573853 10196.74 631 615 154.3
D 1 47 286305 1851.66 631 615 154.3
D 12 235 194798 1258.57 631 615 154.3

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