ASTROSAT CZTI

Data Quality Report

Orbit 40404

Creation date: 2024-06-27T22:15:40.532975
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_056T02_9000005538_40404cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40404cztM0_level2_quad_clean.evt
Size (bytes)339,137,28090,322,560
Size323.4 MB 86.1 MB
Events in quadrant A3,263,470630,715
Events in quadrant B2,974,961655,495
Events in quadrant C2,644,037618,385
Events in quadrant D3,274,212474,493

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127383
B0122442
C0108872
D0131532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50851623.185841%
B5085280.550639%
C5085180.353982%
D5085106120.865290%

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 7206 5086 102 102 1.42% 2.01%
B 7206 5086 9 9 0.12% 0.18%
C 7206 5086 14 14 0.19% 0.28%
D 7206 5086 72 72 1.00% 1.42%

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 473256 3952.54 588 578 119.6
A 13 248 471103 3934.53 588 578 119.6
A 2 79 20472 166.35 588 578 119.6
B 7 202 377323 3376.49 590 576 111.6
B 4 170 169419 1513.21 590 576 111.6
B 5 255 44881 397.07 590 576 111.6
C 15 214 221057 1652.25 574 578 133.4
C 9 54 91003 677.64 574 578 133.4
C 12 249 42492 314.1 574 578 133.4
D 2 250 297990 2361.92 520 507 125.9
D 12 227 264963 2099.7 520 507 125.9
D 12 191 219256 1736.8 520 507 125.9

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