ASTROSAT CZTI

Data Quality Report

Orbit 11887

Creation date: 2024-06-27T16:19:37.399806
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/AS1T01_209T01_9000001758_11887cztM0_level2.evt modeM0/AS1T01_209T01_9000001758_11887cztM0_level2_quad_clean.evt
Size (bytes)515,249,28098,176,320
Size491.4 MB 93.6 MB
Events in quadrant A3,614,308630,655
Events in quadrant B4,175,718630,019
Events in quadrant C3,112,447637,866
Events in quadrant D4,228,649589,062

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152564
B0169383
C0143803
D0169143

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69692673.831253%
B69694897.016789%
C69692163.099440%
D69694125.911896%

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 7160 6974 16 16 0.22% 0.23%
B 7160 6973 147 147 2.05% 2.11%
C 7160 6974 2 2 0.03% 0.03%
D 7160 6974 176 176 2.46% 2.52%

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 138721 835.16 808 789 165.2
A 1 162 110176 662.33 808 789 165.2
A 1 178 53978 322.05 808 789 165.2
B 4 239 840879 5444.55 805 783 154.3
B 15 204 97970 629.86 805 783 154.3
B 0 214 30900 195.18 805 783 154.3
C 0 207 9424 47.0 794 795 183.6
C 13 61 5928 27.96 794 795 183.6
C 14 234 3979 17.34 794 795 183.6
D 1 52 689350 3651.68 775 750 188.6
D 8 195 332183 1757.6 775 750 188.6
D 13 249 97832 514.83 775 750 188.6

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