ASTROSAT CZTI

Data Quality Report

Orbit 54852

Creation date: 2025-11-17T22:28:19.575268
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_039T06_9000006526_54852cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54852cztM0_level2_quad_clean.evt
Size (bytes)376,384,32090,164,160
Size358.9 MB 86.0 MB
Events in quadrant A3,208,833587,910
Events in quadrant B2,937,450626,460
Events in quadrant C3,150,743560,653
Events in quadrant D4,153,706522,565

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01409422
B01326220
C01396121
D01657825

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61901722.778675%
B61911041.679858%
C6189961.551139%
D61901903.069467%

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 7487 6192 69 69 0.92% 1.11%
B 7488 6193 16 16 0.21% 0.26%
C 7486 6191 60 60 0.80% 0.97%
D 7487 6194 137 137 1.83% 2.21%

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 8 206 428130 2562.28 676 660 166.8
A 3 14 32120 188.57 676 660 166.8
A 8 249 26646 155.76 676 660 166.8
B 5 185 102576 705.03 667 643 144.6
B 10 247 86462 593.58 667 643 144.6
B 7 252 32341 219.24 667 643 144.6
C 12 249 271179 1483.45 661 654 182.4
C 14 254 87544 476.47 661 654 182.4
C 12 250 48854 264.31 661 654 182.4
D 10 181 539737 2888.6 658 630 186.6
D 2 172 195522 1044.25 658 630 186.6
D 3 12 111895 596.17 658 630 186.6

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