ASTROSAT CZTI

Data Quality Report

Orbit 40865

Creation date: 2024-06-27T22:21:30.398731
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_097T01_9000005574_40865cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40865cztM0_level2_quad_clean.evt
Size (bytes)396,495,36084,818,880
Size378.1 MB 80.9 MB
Events in quadrant A3,344,174587,481
Events in quadrant B4,164,946551,800
Events in quadrant C3,311,550554,034
Events in quadrant D3,465,624523,069

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132723
B0157962
C0129102
D0137472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5021360.716989%
B502167213.383788%
C50212905.775742%
D5021871.732723%

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 7024 5022 26 26 0.37% 0.52%
B 7024 5022 422 422 6.01% 8.40%
C 7024 5022 238 238 3.39% 4.74%
D 7024 5022 79 79 1.12% 1.57%

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 498228 4251.97 565 555 117.0
A 6 10 433155 3696.01 565 555 117.0
A 13 248 140355 1194.41 565 555 117.0
B 4 171 1935679 18296.68 546 531 105.8
B 4 81 25580 236.84 546 531 105.8
B 7 202 22891 211.41 546 531 105.8
C 14 254 768450 6051.27 539 543 126.9
C 15 214 206841 1625.67 539 543 126.9
C 0 10 200280 1573.97 539 543 126.9
D 12 79 886691 6579.02 546 531 134.7
D 13 249 266050 1971.26 546 531 134.7
D 1 47 44027 322.92 546 531 134.7

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