ASTROSAT CZTI

Data Quality Report

Orbit 34883

Creation date: 2022-03-12T01:35:47.823743
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/AS1C07_005T01_9000004992_34883cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34883cztM0_level2_quad_clean.evt
Size (bytes)481,253,76086,186,880
Size459.0 MB 82.2 MB
Events in quadrant A3,067,040572,181
Events in quadrant B3,382,135579,509
Events in quadrant C3,013,893567,664
Events in quadrant D4,757,597524,587

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125613
B0134292
C0120842
D0178892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52242043.905054%
B52242334.460184%
C5224881.684533%
D52242625.015314%

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 7077 5225 166 166 2.35% 3.18%
B 7077 5225 164 164 2.32% 3.14%
C 7077 5225 76 76 1.07% 1.45%
D 7077 5225 251 251 3.55% 4.80%

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 15 237 634760 5237.71 604 593 121.1
A 10 83 58493 478.21 604 593 121.1
A 13 6 24767 199.66 604 593 121.1
B 5 172 447664 3923.67 606 591 113.9
B 0 190 155751 1361.74 606 591 113.9
B 4 171 129696 1133.07 606 591 113.9
C 0 207 290178 2148.4 588 593 134.8
C 15 214 235846 1745.31 588 593 134.8
C 0 10 147564 1090.36 588 593 134.8
D 8 195 1217748 7951.54 571 559 153.1
D 10 118 317700 2071.79 571 559 153.1
D 2 31 289386 1886.82 571 559 153.1

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