ASTROSAT CZTI

Data Quality Report

Orbit 37765

Creation date: 2024-06-27T21:44:08.467148
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/AS1A11_106T02_9000005344_37765cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37765cztM0_level2_quad_clean.evt
Size (bytes)441,570,24070,153,920
Size421.1 MB 66.9 MB
Events in quadrant A2,786,132452,115
Events in quadrant B3,093,288448,635
Events in quadrant C2,629,160449,601
Events in quadrant D4,524,207422,204

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111452
B0122921
C0106041
D0169781

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5017180.358780%
B50171262.511461%
C5017110.219255%
D50172044.066175%

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 6960 5018 10 10 0.14% 0.20%
B 6960 5018 108 108 1.55% 2.15%
C 6960 5018 12 12 0.17% 0.24%
D 6960 5018 196 196 2.82% 3.91%

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 298427 2478.46 606 596 120.2
A 9 143 83593 690.68 606 596 120.2
A 6 10 29655 241.82 606 596 120.2
B 0 229 204391 1863.64 587 574 109.4
B 5 255 178746 1629.15 587 574 109.4
B 0 189 125888 1145.83 587 574 109.4
C 15 214 219131 1629.25 582 586 134.1
C 14 254 53328 393.19 582 586 134.1
C 0 10 47333 348.5 582 586 134.1
D 12 235 1194534 8301.07 583 565 143.8
D 2 249 378638 2628.55 583 565 143.8
D 10 1 195908 1358.12 583 565 143.8

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