ASTROSAT CZTI

Data Quality Report

Orbit 54922

Creation date: 2025-11-22T15:57:41.553680
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_014T01_9000006528_54922cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54922cztM0_level2_quad_clean.evt
Size (bytes)567,472,32088,272,000
Size541.2 MB 84.2 MB
Events in quadrant A5,103,619591,015
Events in quadrant B3,421,338648,470
Events in quadrant C7,792,274479,486
Events in quadrant D4,206,781519,855

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196531
B0143391
C0275141
D0169101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62162283.667954%
B62171111.785427%
C6217139822.486730%
D62173405.468876%

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 7336 6217 185 185 2.52% 2.98%
B 7337 6218 53 53 0.72% 0.85%
C 7337 6218 1079 1079 14.71% 17.35%
D 7337 6218 289 289 3.94% 4.65%

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 1784655 10881.65 660 642 163.9
A 0 8 301178 1833.13 660 642 163.9
A 3 45 284565 1731.8 660 642 163.9
B 5 185 589433 4153.04 656 633 141.8
B 5 236 172190 1210.06 656 633 141.8
B 5 172 31447 217.34 656 633 141.8
C 4 5 3918324 23883.92 590 584 164.0
C 12 252 950992 5794.02 590 584 164.0
C 13 3 292958 1782.41 590 584 164.0
D 15 94 693762 3869.37 631 603 179.1
D 6 239 280370 1561.72 631 603 179.1
D 3 224 212303 1181.76 631 603 179.1

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