ASTROSAT CZTI

Data Quality Report

Orbit 10820

Creation date: 2024-06-27T16:04:09.427692
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/AS1A03_086T01_9000001568_10820cztM0_level2.evt modeM0/AS1A03_086T01_9000001568_10820cztM0_level2_quad_clean.evt
Size (bytes)18,838,0801,431,360
Size18.0 MB 1.4 MB
Events in quadrant A143,0384,211
Events in quadrant B108,2464,206
Events in quadrant C159,4515,562
Events in quadrant D138,6172,736

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01312
B01312
C01111
D0109

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010696
B0106100
C0113109
D010298

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01567315088
B01632915903
C0104069729
D01433513784

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27110.369004%
B17021.176471%
C33500.000000%
D21510.465116%

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 2750 480 0 0 0.00% 0.00%
B 2615 303 0 0 0.00% 0.00%
C 2689 593 0 0 0.00% 0.00%
D 2648 396 0 0 0.00% 0.00%

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 5 9627 1045.98 34 33 9.2
A 15 174 547 56.04 34 33 9.2
A 0 226 315 30.74 34 33 9.2
B 4 239 16659 2691.22 21 20 6.2
B 0 197 1952 312.49 21 20 6.2
B 0 245 1635 261.21 21 20 6.2
C 13 61 313 24.21 40 40 11.3
C 8 222 239 17.65 40 40 11.3
C 3 202 109 6.12 40 40 11.3
D 8 195 19393 2308.77 26 25 8.4
D 1 52 12549 1492.93 26 25 8.4
D 7 71 1582 185.6 26 25 8.4

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