ASTROSAT CZTI

Data Quality Report

Orbit 11790

Creation date: 2024-06-27T16:18:18.710510
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/AS1C03_024T01_9000001742_11790cztM0_level2.evt modeM0/AS1C03_024T01_9000001742_11790cztM0_level2_quad_clean.evt
Size (bytes)593,231,04098,311,680
Size565.7 MB 93.8 MB
Events in quadrant A4,213,606620,307
Events in quadrant B5,759,915604,988
Events in quadrant C3,450,905631,122
Events in quadrant D4,037,630603,178

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172900
B0220540
C0155930
D0169750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74353174.263618%
B74356158.271688%
C74351301.748487%
D74351832.461332%

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 7436 7436 5 5 0.07% 0.07%
B 7436 7436 220 220 2.96% 2.96%
C 7436 7436 0 0 0.00% 0.00%
D 7436 7436 42 42 0.56% 0.56%

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 8 15 305347 1618.6 904 883 188.1
A 1 162 129970 686.26 904 883 188.1
A 9 143 68781 360.96 904 883 188.1
B 10 16 709481 4094.17 886 864 173.1
B 4 239 648497 3741.83 886 864 173.1
B 15 204 387911 2236.24 886 864 173.1
C 8 128 8024 34.34 881 886 207.8
C 13 61 6432 26.68 881 886 207.8
C 8 112 5271 21.09 881 886 207.8
D 8 195 172413 802.62 881 855 213.7
D 10 199 111321 516.81 881 855 213.7
D 13 249 89738 415.83 881 855 213.7

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