ASTROSAT CZTI

Data Quality Report

Orbit 13711

Creation date: 2024-06-27T16:45:05.332130
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/AS1T02_041T01_9000002032_13711cztM0_level2.evt modeM0/AS1T02_041T01_9000002032_13711cztM0_level2_quad_clean.evt
Size (bytes)495,806,400142,007,040
Size472.8 MB 135.4 MB
Events in quadrant A3,425,462938,330
Events in quadrant B3,680,593961,135
Events in quadrant C3,619,503954,819
Events in quadrant D3,776,478921,395

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154652
B0159101
C0158081
D0164201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75621501.983602%
B75622082.750595%
C75621682.221634%
D75621341.772018%

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 7638 7565 0 0 0.00% 0.00%
B 7638 7565 20 20 0.26% 0.26%
C 7638 7565 21 21 0.27% 0.28%
D 7638 7565 7 7 0.09% 0.09%

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 1 162 13741 71.27 886 864 180.7
A 0 226 7816 38.48 886 864 180.7
A 12 194 6750 32.58 886 864 180.7
B 8 250 54063 318.05 887 863 167.3
B 3 64 48531 284.97 887 863 167.3
B 0 214 44733 262.27 887 863 167.3
C 3 233 131819 665.91 860 865 196.7
C 4 254 121490 613.39 860 865 196.7
C 12 4 6700 29.67 860 865 196.7
D 5 222 270574 1304.26 863 836 206.8
D 8 195 112056 537.78 863 836 206.8
D 13 249 88729 424.99 863 836 206.8

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