ASTROSAT CZTI

Data Quality Report

Orbit 54806

Creation date: 2025-11-14T21:50:15.552210
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_54806cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54806cztM0_level2_quad_clean.evt
Size (bytes)387,714,24092,632,320
Size369.8 MB 88.3 MB
Events in quadrant A2,698,474607,352
Events in quadrant B3,258,476646,094
Events in quadrant C3,848,710577,422
Events in quadrant D4,056,155534,652

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128991
B0142131
C0157811
D0164701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6296901.429479%
B62961752.779543%
C62961282.033037%
D62962263.589581%

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 7381 6296 4 4 0.05% 0.06%
B 7381 6296 49 49 0.66% 0.78%
C 7381 6296 50 50 0.68% 0.79%
D 7381 6296 150 150 2.03% 2.38%

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 5 240 27798 160.89 684 668 168.6
A 13 254 11860 66.37 684 668 168.6
A 3 14 9114 50.09 684 668 168.6
B 5 185 383116 2694.41 664 641 142.0
B 2 249 109917 769.81 664 641 142.0
B 6 255 40068 277.75 664 641 142.0
C 9 38 441068 2446.35 657 651 180.0
C 12 252 439928 2440.02 657 651 180.0
C 14 254 161040 890.9 657 651 180.0
D 3 12 329468 1801.97 651 622 182.5
D 10 181 265270 1450.18 651 622 182.5
D 2 249 238811 1305.2 651 622 182.5

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