ASTROSAT CZTI

Data Quality Report

Orbit 24987

Creation date: 2024-06-27T19:12:22.768761
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/AS1A08_003T18_9000003658_24987cztM0_level2.evt modeM0/AS1A08_003T18_9000003658_24987cztM0_level2_quad_clean.evt
Size (bytes)411,151,68058,944,960
Size392.1 MB 56.2 MB
Events in quadrant A2,459,335371,198
Events in quadrant B2,438,015376,224
Events in quadrant C3,450,302342,053
Events in quadrant D3,764,929344,903

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104461
B0103081
C0134821
D0144941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4991470.941695%
B4992661.322115%
C49923246.490385%
D4992971.943109%

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 5871 4992 1 1 0.02% 0.02%
B 5872 4993 0 0 0.00% 0.00%
C 5872 4993 143 143 2.44% 2.86%
D 5872 4993 71 71 1.21% 1.42%

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 9 130 45249 351.73 623 608 126.9
A 6 16 13370 100.55 623 608 126.9
A 13 254 6726 48.2 623 608 126.9
B 12 111 14907 117.91 618 603 121.3
B 11 111 13691 107.88 618 603 121.3
B 14 111 12606 98.94 618 603 121.3
C 7 247 1004867 7285.6 585 590 137.8
C 14 238 93592 674.69 585 590 137.8
C 2 16 67038 482.05 585 590 137.8
D 7 238 1283041 8827.12 596 578 145.3
D 1 52 93751 641.3 596 578 145.3
D 2 244 75202 513.63 596 578 145.3

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