ASTROSAT CZTI

Data Quality Report

Orbit 40376

Creation date: 2024-06-27T22:15:25.519824
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_40376cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40376cztM0_level2_quad_clean.evt
Size (bytes)507,836,160149,313,600
Size484.3 MB 142.4 MB
Events in quadrant A4,730,1941,038,393
Events in quadrant B4,048,9731,064,100
Events in quadrant C4,074,561999,768
Events in quadrant D5,282,635828,108

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190403
B0175582
C0173162
D0213922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8511800.939960%
B8511200.234990%
C8511120.140994%
D8511110312.959699%

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 12636 8513 50 50 0.40% 0.59%
B 12636 8513 8 8 0.06% 0.09%
C 12636 8513 10 10 0.08% 0.12%
D 12636 8511 224 224 1.77% 2.63%

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 662391 3422.7 956 942 193.3
A 13 248 274755 1416.86 956 942 193.3
A 6 10 40963 207.09 956 942 193.3
B 4 170 65655 361.13 956 934 179.2
B 0 230 51754 283.56 956 934 179.2
B 7 202 50973 279.2 956 934 179.2
C 15 214 359922 1688.24 931 939 212.6
C 0 10 42791 196.82 931 939 212.6
C 14 254 32898 150.3 931 939 212.6
D 12 227 872486 4078.37 864 843 213.7
D 2 250 373189 1742.19 864 843 213.7
D 12 191 267818 1249.16 864 843 213.7

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