ASTROSAT CZTI

Data Quality Report

Orbit 26370

Creation date: 2024-06-27T19:28:14.428125
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/AS1A09_088T01_9000003812_26370cztM0_level2.evt modeM0/AS1A09_088T01_9000003812_26370cztM0_level2_quad_clean.evt
Size (bytes)783,806,40071,340,480
Size747.5 MB 68.0 MB
Events in quadrant A3,307,919464,597
Events in quadrant B3,083,066477,051
Events in quadrant C8,566,229382,096
Events in quadrant D8,369,218409,885

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138260
B0130860
C0297630
D0290430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60961272.083333%
B6096550.902231%
C6096209134.301181%
D6096174628.641732%

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 7241 6097 69 69 0.95% 1.13%
B 7241 6097 0 0 0.00% 0.00%
C 7241 6097 1449 1449 20.01% 23.77%
D 7241 6097 1340 1340 18.51% 21.98%

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 0 13 314102 2028.27 774 760 154.5
A 13 254 10503 63.07 774 760 154.5
A 3 137 6754 38.8 774 760 154.5
B 0 230 54519 370.67 775 757 145.0
B 12 111 16746 110.24 775 757 145.0
B 11 111 15130 99.1 775 757 145.0
C 3 233 5456834 37151.0 638 642 146.9
C 4 254 316440 2150.26 638 642 146.9
C 2 16 206530 1401.88 638 642 146.9
D 7 80 4145873 26567.66 662 646 156.0
D 1 52 1547306 9912.88 662 646 156.0
D 11 176 108574 691.73 662 646 156.0

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