ASTROSAT CZTI

Data Quality Report

Orbit 40386

Creation date: 2024-06-27T22:15:30.093699
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_40386cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40386cztM0_level2_quad_clean.evt
Size (bytes)609,580,800170,913,600
Size581.3 MB 163.0 MB
Events in quadrant A5,705,4741,179,021
Events in quadrant B5,067,4691,208,833
Events in quadrant C4,973,4051,162,903
Events in quadrant D6,043,113933,089

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228524
B0213843
C0207463
D0244403

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9974960.962503%
B9974300.300782%
C9974210.210547%
D9975141814.215539%

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 13649 9976 62 62 0.45% 0.62%
B 13649 9976 18 18 0.13% 0.18%
C 13649 9976 17 17 0.12% 0.17%
D 13650 9976 199 199 1.46% 1.99%

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 830316 3573.18 1146 1125 232.1
A 13 248 350363 1504.95 1146 1125 232.1
A 2 79 44406 186.51 1146 1125 232.1
B 4 170 169554 781.46 1132 1101 215.6
B 4 171 147749 680.31 1132 1101 215.6
B 0 230 115814 532.16 1132 1101 215.6
C 15 214 430316 1663.7 1115 1123 258.0
C 14 254 83779 320.4 1115 1123 258.0
C 12 249 59872 227.73 1115 1123 258.0
D 2 250 834222 3311.26 1035 1009 251.6
D 12 128 403528 1599.65 1035 1009 251.6
D 12 191 361483 1432.55 1035 1009 251.6

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