ASTROSAT CZTI

Data Quality Report

Orbit 37900

Creation date: 2024-06-27T21:45:54.184533
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/AS1T05_059T01_9000005354_37900cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37900cztM0_level2_quad_clean.evt
Size (bytes)461,448,00073,808,640
Size440.1 MB 70.4 MB
Events in quadrant A2,821,227478,201
Events in quadrant B2,840,730477,641
Events in quadrant C2,908,498475,323
Events in quadrant D5,037,158424,820

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116603
B0119822
C0120292
D0187052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5411130.240251%
B5411701.293661%
C5411811.496951%
D541159310.959157%

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 7263 5412 4 4 0.06% 0.07%
B 7263 5412 49 49 0.67% 0.91%
C 7263 5412 68 68 0.94% 1.26%
D 7263 5412 490 490 6.75% 9.05%

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 383015 3093.24 609 598 123.6
A 13 6 22245 175.09 609 598 123.6
A 12 189 20990 164.94 609 598 123.6
B 5 172 318412 2762.6 603 587 115.0
B 4 171 35347 302.14 603 587 115.0
B 0 229 19186 161.67 603 587 115.0
C 0 10 273210 2012.33 581 585 135.5
C 15 214 228081 1679.22 581 585 135.5
C 14 254 128939 947.42 581 585 135.5
D 1 52 1012788 7330.5 563 548 138.1
D 13 200 604952 4377.01 563 548 138.1
D 2 249 325634 2354.23 563 548 138.1

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