ASTROSAT CZTI

Data Quality Report

Orbit 46284

Creation date: 2024-06-27T23:21:14.931212
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/AS1A13_072T01_9000006192_46284cztM0_level2.fits modeM0/AS1A13_072T01_9000006192_46284cztM0_level2_quad_clean.evt
Size (bytes)496,232,640114,693,120
Size473.2 MB 109.4 MB
Events in quadrant A6,300,880746,835
Events in quadrant B5,006,508789,031
Events in quadrant C3,144,553763,461
Events in quadrant D3,387,240697,987

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228494
B0197762
C0142592
D0148632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68293054.466247%
B68292153.148338%
C6829991.449700%
D68291021.493630%

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 7889 6830 40 40 0.51% 0.59%
B 7889 6830 34 34 0.43% 0.50%
C 7889 6830 21 21 0.27% 0.31%
D 7889 6830 16 16 0.20% 0.23%

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 3127421 19482.21 779 763 160.5
A 9 191 114891 711.13 779 763 160.5
A 2 79 30231 183.62 779 763 160.5
B 3 112 1683438 11028.84 778 754 152.6
B 5 172 93050 604.94 778 754 152.6
B 0 190 84901 551.53 778 754 152.6
C 12 2 73298 401.12 771 772 180.8
C 2 14 58757 320.7 771 772 180.8
C 13 61 5300 25.04 771 772 180.8
D 1 52 232346 1202.38 774 750 192.6
D 13 249 99643 513.43 774 750 192.6
D 2 249 70503 362.14 774 750 192.6

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