ASTROSAT CZTI

Data Quality Report

Orbit 24577

Creation date: 2024-06-27T19:07:28.859544
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/AS1T03_183T01_9000003610_24577cztM0_level2.evt modeM0/AS1T03_183T01_9000003610_24577cztM0_level2_quad_clean.evt
Size (bytes)499,838,400136,422,720
Size476.7 MB 130.1 MB
Events in quadrant A3,140,351963,642
Events in quadrant B3,220,796975,546
Events in quadrant C3,942,590899,381
Events in quadrant D4,434,063881,303

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131001
B0133101
C0157961
D0172691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5899761.288354%
B5900881.491525%
C59001582.677966%
D59002003.389831%

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 7219 5900 0 0 0.00% 0.00%
B 7220 5900 1 1 0.01% 0.02%
C 7220 5901 8 8 0.11% 0.14%
D 7220 5901 115 115 1.59% 1.95%

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 13 254 9799 56.35 814 803 159.6
A 0 226 7056 39.17 814 803 159.6
A 3 137 6407 35.1 814 803 159.6
B 3 64 48992 327.05 804 789 147.4
B 0 190 18596 120.82 804 789 147.4
B 12 111 16681 107.82 804 789 147.4
C 7 247 664805 3888.65 755 764 170.8
C 2 16 155663 907.09 755 764 170.8
C 14 238 125077 727.98 755 764 170.8
D 8 195 904487 5015.83 768 746 180.2
D 12 218 592437 3283.93 768 746 180.2
D 2 234 29550 159.86 768 746 180.2

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