ASTROSAT CZTI

Data Quality Report

Orbit 24786

Creation date: 2024-06-27T19:09:54.411895
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/AS1T03_197T01_9000003626_24786cztM0_level2.evt modeM0/AS1T03_197T01_9000003626_24786cztM0_level2_quad_clean.evt
Size (bytes)326,450,88058,599,360
Size311.3 MB 55.9 MB
Events in quadrant A2,237,134366,446
Events in quadrant B2,477,347368,340
Events in quadrant C2,380,427356,675
Events in quadrant D2,470,668352,064

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096601
B0103141
C098671
D0104131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4709270.573370%
B47091132.399660%
C4709781.656403%
D4709320.679550%

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 5084 4710 0 0 0.00% 0.00%
B 5084 4710 25 25 0.49% 0.53%
C 5084 4710 0 0 0.00% 0.00%
D 5084 4710 3 3 0.06% 0.06%

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 13 254 7878 61.75 580 567 118.4
A 3 137 5477 41.47 580 567 118.4
A 0 226 4856 36.23 580 567 118.4
B 3 64 186305 1664.39 572 557 111.6
B 4 52 22038 192.48 572 557 111.6
B 12 111 13753 118.24 572 557 111.6
C 10 91 116903 901.81 550 552 129.0
C 14 238 86156 663.5 550 552 129.0
C 8 208 16650 124.77 550 552 129.0
D 1 52 235969 1696.93 561 543 138.7
D 8 195 93146 667.47 561 543 138.7
D 2 234 19523 136.81 561 543 138.7

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