ASTROSAT CZTI

Data Quality Report

Orbit 00726

Creation date: 2024-06-27T14:02:06.710827
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_147T01_9000000106_00726cztM0_level2.evt modeM0/AS1P01_147T01_9000000106_00726cztM0_level2_quad_clean.evt
Size (bytes)638,409,60042,223,680
Size608.8 MB 40.3 MB
Events in quadrant A4,506,819253,193
Events in quadrant B4,705,850255,780
Events in quadrant C4,160,706252,615
Events in quadrant D5,698,842239,531

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161520
B0167720
C0151600
D0197770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A392430.076453%
B392470.178389%
C392500.000000%
D392551113.019108%

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 3924 3924 55 55 1.40% 1.40%
B 3924 3924 62 62 1.58% 1.58%
C 3925 3925 18 18 0.46% 0.46%
D 3925 3925 712 712 18.14% 18.14%

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 15 171 87125 308.0 1147 1157 279.1
A 13 8 14265 46.96 1147 1157 279.1
A 11 79 5048 13.94 1147 1157 279.1
B 7 221 163254 577.64 1177 1187 280.6
B 0 220 27635 94.27 1177 1187 280.6
B 3 204 18169 60.53 1177 1187 280.6
C 15 241 24861 81.34 1049 1085 292.3
C 3 111 15967 50.91 1049 1085 292.3
C 3 79 8688 26.01 1049 1085 292.3
D 9 52 1527353 5019.57 977 1011 304.1
D 6 226 455170 1493.56 977 1011 304.1
D 7 207 29375 93.28 977 1011 304.1

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