ASTROSAT CZTI

Data Quality Report

Orbit 38931

Creation date: 2024-06-27T21:58:19.023903
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/AS1T05_064T01_9000005416_38931cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38931cztM0_level2_quad_clean.evt
Size (bytes)429,048,000100,555,200
Size409.2 MB 95.9 MB
Events in quadrant A3,320,890685,653
Events in quadrant B3,516,896692,369
Events in quadrant C2,947,854684,028
Events in quadrant D5,606,449543,204

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136023
B0146412
C0126772
D0209742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6294290.460756%
B62941933.066412%
C629450.079441%
D629497715.522720%

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 8919 6296 20 20 0.22% 0.32%
B 8919 6296 151 151 1.69% 2.40%
C 8919 6296 1 1 0.01% 0.02%
D 8919 6295 925 925 10.37% 14.69%

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 10 83 467571 3320.7 697 682 140.6
A 13 248 68011 478.87 697 682 140.6
A 6 10 41402 289.62 697 682 140.6
B 5 172 695700 5223.4 687 667 133.1
B 0 190 50839 377.06 687 667 133.1
B 0 155 34318 252.89 687 667 133.1
C 15 214 258302 1615.76 685 689 159.4
C 0 10 7316 41.56 685 689 159.4
C 13 61 4617 24.64 685 689 159.4
D 2 250 2559299 16758.32 624 604 152.7
D 12 227 269753 1762.81 624 604 152.7
D 2 153 101828 662.97 624 604 152.7

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