ASTROSAT CZTI

Data Quality Report

Orbit 33582

Creation date: 2024-06-27T20:50:25.302709
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/AS1A11_060T01_9000004808_33582cztM0_level2.evt modeM0/AS1A11_060T01_9000004808_33582cztM0_level2_quad_clean.evt
Size (bytes)561,003,84071,447,040
Size535.0 MB 68.1 MB
Events in quadrant A4,266,243455,534
Events in quadrant B4,082,017460,382
Events in quadrant C4,190,817450,802
Events in quadrant D4,096,692429,572

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160333
B0153892
C0162892
D0157452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52421562.975963%
B52424939.404807%
C52422043.891644%
D52422695.131629%

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 7305 5243 141 141 1.93% 2.69%
B 7305 5242 403 403 5.52% 7.69%
C 7305 5243 186 186 2.55% 3.55%
D 7305 5243 243 243 3.33% 4.63%

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 15 169 1725428 13176.47 656 646 130.9
A 13 254 8321 58.63 656 646 130.9
A 10 83 6140 41.97 656 646 130.9
B 5 172 1371713 11237.77 644 629 122.0
B 15 222 64132 520.49 644 629 122.0
B 5 255 39824 321.25 644 629 122.0
C 3 233 870780 5880.74 641 647 148.0
C 0 10 432801 2920.69 641 647 148.0
C 15 214 221676 1493.81 641 647 148.0
D 8 195 447986 2914.93 631 613 153.5
D 2 249 323366 2102.95 631 613 153.5
D 13 249 303260 1971.95 631 613 153.5

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