ASTROSAT CZTI

Data Quality Report

Orbit 30417

Creation date: 2024-06-27T20:14:59.352885
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/AS1C05_019T04_9000004376_30417cztM0_level2.evt modeM0/AS1C05_019T04_9000004376_30417cztM0_level2_quad_clean.evt
Size (bytes)700,090,560115,156,800
Size667.7 MB 109.8 MB
Events in quadrant A4,704,170755,534
Events in quadrant B5,715,556769,134
Events in quadrant C3,597,742761,963
Events in quadrant D6,685,343686,121

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189601
B0224471
C0156161
D0252761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73962833.826393%
B73971792.419900%
C73971071.446532%
D7397107714.559957%

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 7576 7397 198 198 2.61% 2.68%
B 7577 7397 4 4 0.05% 0.05%
C 7577 7397 3 3 0.04% 0.04%
D 7577 7397 734 734 9.69% 9.92%

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 14 239 1154130 6775.51 850 832 170.2
A 0 13 198163 1159.3 850 832 170.2
A 12 96 64147 371.97 850 832 170.2
B 6 159 2174472 13178.0 857 833 164.9
B 0 229 106516 640.72 857 833 164.9
B 4 80 33722 199.39 857 833 164.9
C 14 238 141576 723.68 835 839 194.5
C 10 22 103231 526.51 835 839 194.5
C 3 233 62556 317.35 835 839 194.5
D 13 104 3101474 15491.21 781 763 200.2
D 13 249 237139 1180.94 781 763 200.2
D 8 195 211360 1052.14 781 763 200.2

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