ASTROSAT CZTI

Data Quality Report

Orbit 00399

Creation date: 2024-06-27T13:59:22.291198
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/AS1P01_161T02_9000000066_00399cztM0_level2.evt modeM0/AS1P01_161T02_9000000066_00399cztM0_level2_quad_clean.evt
Size (bytes)814,547,52041,857,920
Size776.8 MB 39.9 MB
Events in quadrant A6,398,989230,664
Events in quadrant B5,950,936223,619
Events in quadrant C6,436,893230,415
Events in quadrant D5,538,258220,183

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226922
B0213291
C0228031
D0201581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5169280.541691%
B516920.038692%
C51691082.089379%
D5169110.212807%

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 7233 5170 178 178 2.46% 3.44%
B 7233 5170 41 41 0.57% 0.79%
C 7233 5170 346 346 4.78% 6.69%
D 7233 5170 90 90 1.24% 1.74%

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 0 238 154883 437.82 1551 1534 350.3
A 12 150 85868 240.78 1551 1534 350.3
A 12 133 57202 158.93 1551 1534 350.3
B 0 220 22358 56.4 1539 1546 369.0
B 5 46 19210 47.87 1539 1546 369.0
B 12 52 8131 17.85 1539 1546 369.0
C 3 159 648677 1710.93 1354 1404 378.3
C 1 1 434046 1143.6 1354 1404 378.3
C 2 53 19942 49.0 1354 1404 378.3
D 2 154 81506 193.08 1314 1365 415.1
D 1 36 56801 133.56 1314 1365 415.1
D 13 51 47960 112.26 1314 1365 415.1

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