ASTROSAT CZTI

Data Quality Report

Orbit 40474

Creation date: 2024-06-27T22:16:32.568997
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_40474cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40474cztM0_level2_quad_clean.evt
Size (bytes)282,481,92087,762,240
Size269.4 MB 83.7 MB
Events in quadrant A2,718,246607,733
Events in quadrant B2,317,377622,180
Events in quadrant C2,510,450582,680
Events in quadrant D2,517,245492,269

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110293
B0101586
C0104562
D0108113

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A503290.178855%
B502940.079539%
C503280.158983%
D503154910.912343%

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 7034 5033 4 4 0.06% 0.08%
B 7034 5032 0 0 0.00% 0.00%
C 7034 5033 8 8 0.11% 0.16%
D 7034 5033 24 24 0.34% 0.48%

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 447287 3788.9 579 568 117.9
A 7 3 23222 192.14 579 568 117.9
A 2 79 8261 65.25 579 568 117.9
B 0 230 26335 236.83 570 556 108.8
B 3 112 22861 204.92 570 556 108.8
B 12 111 13586 119.71 570 556 108.8
C 15 214 224671 1736.48 554 557 129.1
C 14 254 66464 510.66 554 557 129.1
C 10 20 32950 250.99 554 557 129.1
D 12 191 178360 1382.04 528 512 128.7
D 12 128 117922 912.38 528 512 128.7
D 1 47 62806 484.08 528 512 128.7

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