ASTROSAT CZTI

Data Quality Report

Orbit 50866

Creation date: 2025-02-22T13:58:21.110863
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/AS1C07_001T01_9000006450_50866cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50866cztM0_level2_quad_clean.evt
Size (bytes)526,196,16096,546,240
Size501.8 MB 92.1 MB
Events in quadrant A5,678,786614,291
Events in quadrant B4,067,458672,159
Events in quadrant C4,777,597595,180
Events in quadrant D4,419,816562,195

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216023
B0169741
C0189661
D0180231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68864125.983154%
B68873404.936838%
C68873705.372441%
D68872884.181792%

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 7751 6886 288 288 3.72% 4.18%
B 7751 6886 209 209 2.70% 3.04%
C 7752 6888 321 321 4.14% 4.66%
D 7752 6887 245 245 3.16% 3.56%

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 4 4 1841354 10293.63 716 697 178.8
A 8 38 156264 869.99 716 697 178.8
A 4 249 146575 815.8 716 697 178.8
B 4 206 645329 4252.12 710 685 151.6
B 0 229 89395 585.14 710 685 151.6
B 4 170 77904 509.34 710 685 151.6
C 13 3 840481 4432.53 689 682 189.5
C 15 229 338969 1785.51 689 682 189.5
C 5 10 180774 950.54 689 682 189.5
D 2 249 341650 1792.98 688 664 190.2
D 11 245 231552 1214.06 688 664 190.2
D 15 185 212664 1114.74 688 664 190.2

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