ASTROSAT CZTI

Data Quality Report

Orbit 40493

Creation date: 2024-06-27T22:16:47.166238
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/AS1A12_022T01_9000005540_40493cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40493cztM0_level2_quad_clean.evt
Size (bytes)310,775,04088,269,120
Size296.4 MB 84.2 MB
Events in quadrant A2,806,413602,862
Events in quadrant B2,769,284608,144
Events in quadrant C2,502,547584,443
Events in quadrant D2,998,567493,937

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118623
B0120622
C0110472
D0129042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5469100.182849%
B5469831.517645%
C546930.054855%
D546955510.148108%

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 7113 5470 3 3 0.04% 0.05%
B 7113 5470 34 34 0.48% 0.62%
C 7113 5470 2 2 0.03% 0.04%
D 7113 5470 126 126 1.77% 2.30%

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 497056 4164.81 583 571 119.2
A 12 189 16888 136.88 583 571 119.2
A 2 79 15035 121.33 583 571 119.2
B 4 170 369401 3322.85 577 561 111.0
B 3 112 80566 720.76 577 561 111.0
B 0 230 39055 346.79 577 561 111.0
C 15 214 238962 1787.51 571 573 133.4
C 3 233 12406 88.73 571 573 133.4
C 14 254 10514 74.54 571 573 133.4
D 9 19 205203 1512.1 543 527 135.4
D 2 250 188824 1391.1 543 527 135.4
D 12 227 172670 1271.76 543 527 135.4

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