ASTROSAT CZTI

Data Quality Report

Orbit 38726

Creation date: 2024-06-27T21:55:39.340570
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/AS1A12_054T01_9000005392_38726cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38726cztM0_level2_quad_clean.evt
Size (bytes)540,599,04082,635,840
Size515.6 MB 78.8 MB
Events in quadrant A3,690,761596,179
Events in quadrant B2,474,728627,124
Events in quadrant C2,617,894592,713
Events in quadrant D10,806,379306,236

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142973
B0109742
C0110652
D0358142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54231813.337636%
B542380.147520%
C542390.165960%
D5423296954.748294%

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 7094 5424 137 137 1.93% 2.53%
B 7094 5424 0 0 0.00% 0.00%
C 7094 5424 5 5 0.07% 0.09%
D 7094 5424 2545 2545 35.88% 46.92%

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 13 248 496213 4019.49 607 595 123.3
A 10 83 410003 3320.32 607 595 123.3
A 9 143 269135 2177.87 607 595 123.3
B 4 171 38467 318.77 608 592 118.8
B 0 199 22671 185.82 608 592 118.8
B 12 111 14767 119.3 608 592 118.8
C 15 214 226230 1611.42 595 599 140.0
C 15 208 44532 313.76 595 599 140.0
C 0 10 18293 126.37 595 599 140.0
D 2 16 7006963 55693.13 506 492 125.8
D 12 235 528658 4198.29 506 492 125.8
D 12 6 459125 3645.59 506 492 125.8

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