ASTROSAT CZTI

Data Quality Report

Orbit 51729

Creation date: 2025-04-23T09:25:10.878665
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/AS1A13_090T01_9000006464_51729cztM0_level2.fits modeM0/AS1A13_090T01_9000006464_51729cztM0_level2_quad_clean.evt
Size (bytes)588,738,24079,197,120
Size561.5 MB 75.5 MB
Events in quadrant A3,554,110557,937
Events in quadrant B3,880,908605,584
Events in quadrant C3,592,664549,663
Events in quadrant D10,296,490263,711

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146191
B0156211
C0148711
D0347073

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60302864.742952%
B60313495.786768%
C60312193.631239%
D6030332055.058043%

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 6925 6030 119 119 1.72% 1.97%
B 6926 6031 130 130 1.88% 2.16%
C 6926 6031 114 114 1.65% 1.89%
D 6924 6029 2674 2674 38.62% 44.35%

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 4 175 281755 1727.89 669 654 162.7
A 13 248 159589 976.95 669 654 162.7
A 0 111 86468 527.49 669 654 162.7
B 0 216 180982 1279.36 658 637 141.0
B 6 51 146656 1035.85 658 637 141.0
B 0 213 129162 911.75 658 637 141.0
C 0 192 258953 1449.42 653 646 178.2
C 13 3 126247 704.78 653 646 178.2
C 2 207 96537 538.07 653 646 178.2
D 11 129 7928938 61011.78 463 446 130.0
D 8 176 231845 1780.67 463 446 130.0
D 12 218 66989 512.07 463 446 130.0

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