ASTROSAT CZTI

Data Quality Report

Orbit 51249

Creation date: 2025-03-20T10:40:25.881342
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/AS1C07_001T01_9000006454_51249cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51249cztM0_level2_quad_clean.evt
Size (bytes)693,541,44093,706,560
Size661.4 MB 89.4 MB
Events in quadrant A5,778,672640,701
Events in quadrant B4,189,137708,103
Events in quadrant C10,401,237436,454
Events in quadrant D4,776,109577,378

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220372
B0172022
C0355752
D0192902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68121782.613036%
B68121952.862595%
C6812259138.035819%
D68123775.534351%

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 7922 6813 117 117 1.48% 1.72%
B 7922 6813 104 104 1.31% 1.53%
C 7922 6813 2289 2289 28.89% 33.60%
D 7922 6813 333 333 4.20% 4.89%

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 12 3 2124745 12140.24 703 686 175.0
A 12 194 243828 1389.7 703 686 175.0
A 8 10 120481 684.7 703 686 175.0
B 10 254 493936 3313.34 708 684 148.9
B 10 14 291164 1951.25 708 684 148.9
B 7 252 193964 1298.33 708 684 148.9
C 4 12 6759048 41973.92 575 568 161.0
C 13 3 724146 4493.82 575 568 161.0
C 14 245 191744 1187.31 575 568 161.0
D 3 12 588931 3162.17 664 641 186.0
D 8 176 474036 2544.59 664 641 186.0
D 2 216 431953 2318.38 664 641 186.0

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