ASTROSAT CZTI

Data Quality Report

Orbit 01304

Creation date: 2024-06-27T14:10:41.163101
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/AS1G04_002T02_9000000230_01304cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01304cztM0_level2_quad_clean.evt
Size (bytes)1,136,033,28089,009,280
Size1.1 GB 84.9 MB
Events in quadrant A7,020,704586,823
Events in quadrant B7,894,714594,359
Events in quadrant C6,843,975574,866
Events in quadrant D12,255,626525,771

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250502
B0276561
C0245621
D0405921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5917290.490113%
B5917570.963326%
C5917200.338009%
D59175569.396654%

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 7042 5918 221 221 3.14% 3.73%
B 7042 5918 533 533 7.57% 9.01%
C 7042 5918 182 182 2.58% 3.08%
D 7042 5918 2945 2945 41.82% 49.76%

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 32 104511 239.57 1786 1798 428.7
A 12 243 27492 59.93 1786 1798 428.7
A 15 127 16676 34.7 1786 1798 428.7
B 8 4 625155 1416.87 1856 1864 439.9
B 6 53 65909 145.59 1856 1864 439.9
B 15 22 62983 138.94 1856 1864 439.9
C 15 241 282585 616.84 1641 1694 455.4
C 12 4 44553 94.12 1641 1694 455.4
C 8 208 42638 89.91 1641 1694 455.4
D 13 169 5985437 13128.57 1583 1614 455.8
D 10 84 308575 673.47 1583 1614 455.8
D 12 22 20644 41.75 1583 1614 455.8

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