ASTROSAT CZTI

Data Quality Report

Orbit 01037

Creation date: 2024-06-27T14:06:31.885538
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_998T02_9000000190_01037cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01037cztM0_level2_quad_clean.evt
Size (bytes)996,422,400108,820,800
Size950.3 MB 103.8 MB
Events in quadrant A7,415,970719,138
Events in quadrant B7,959,405728,167
Events in quadrant C7,540,554703,728
Events in quadrant D6,831,435693,892

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266151
B0282694
C0270011
D0249741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6462200.309502%
B6461460.711964%
C6461170.263117%
D6461130.201207%

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 7387 6463 132 132 1.79% 2.04%
B 7386 6462 226 226 3.06% 3.50%
C 7386 6462 148 148 2.00% 2.29%
D 7386 6462 130 130 1.76% 2.01%

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 11 79 9193 15.61 1931 1942 464.4
A 3 111 6352 9.49 1931 1942 464.4
A 14 203 5034 6.66 1931 1942 464.4
B 15 22 68450 140.78 2019 2031 471.8
B 7 221 57255 117.05 2019 2031 471.8
B 12 52 38105 76.46 2019 2031 471.8
C 15 241 318135 631.41 1803 1866 500.9
C 8 208 119264 234.38 1803 1866 500.9
C 3 111 27616 51.41 1803 1866 500.9
D 13 73 202300 369.19 1753 1815 543.0
D 10 125 33848 58.99 1753 1815 543.0
D 13 88 17814 29.46 1753 1815 543.0

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