ASTROSAT CZTI

Data Quality Report

Orbit 54590

Creation date: 2025-10-31T12:46:16.678431
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/AS1A14_127T09_9000006520_54590cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54590cztM0_level2_quad_clean.evt
Size (bytes)462,890,88093,833,280
Size441.4 MB 89.5 MB
Events in quadrant A4,327,156620,977
Events in quadrant B3,531,292665,503
Events in quadrant C3,976,770565,857
Events in quadrant D4,798,648539,309

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173191
B0152691
C0164831
D0187301

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64422323.601366%
B64422083.228811%
C64434166.456620%
D64424246.581807%

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 7522 6443 138 138 1.83% 2.14%
B 7522 6443 109 109 1.45% 1.69%
C 7523 6444 380 380 5.05% 5.90%
D 7522 6443 349 349 4.64% 5.42%

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 3 14 1050384 6058.61 697 678 173.3
A 11 3 467860 2696.44 697 678 173.3
A 4 3 45813 260.5 697 678 173.3
B 6 255 450630 3010.08 697 673 149.5
B 10 14 155309 1034.47 697 673 149.5
B 10 247 72568 480.96 697 673 149.5
C 4 5 1190464 6406.48 673 667 185.7
C 7 220 36678 193.9 673 667 185.7
C 12 250 34310 181.15 673 667 185.7
D 3 12 794614 4194.0 665 637 189.3
D 15 94 543405 2867.05 665 637 189.3
D 2 172 410247 2163.67 665 637 189.3

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