ASTROSAT CZTI

Data Quality Report

Orbit 58562

Creation date: 2026-07-25T13:13:07.532666
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_044T04_9000006592_58562cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58562cztM0_level2_quad_clean.evt
Size (bytes)468,339,840112,824,000
Size446.6 MB 107.6 MB
Events in quadrant A3,669,165731,424
Events in quadrant B4,320,059784,093
Events in quadrant C4,113,424702,940
Events in quadrant D4,624,951653,240

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164500
B0182140
C0177810
D0192480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78311021.302516%
B78322182.783453%
C78321021.302349%
D78322032.591931%

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 7831 7831 9 9 0.11% 0.11%
B 7832 7832 40 40 0.51% 0.51%
C 7832 7832 65 65 0.83% 0.83%
D 7832 7832 150 150 1.92% 1.92%

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 10 17 61823 282.65 873 848 215.7
A 4 249 61518 281.24 873 848 215.7
A 4 3 37729 170.96 873 848 215.7
B 8 234 325300 1735.21 864 832 187.0
B 0 171 191939 1022.01 864 832 187.0
B 10 247 93205 494.0 864 832 187.0
C 4 5 370371 1606.13 845 837 230.1
C 12 252 218269 945.04 845 837 230.1
C 13 3 47162 201.35 845 837 230.1
D 2 249 543703 2318.7 834 796 234.1
D 8 240 469315 2001.0 834 796 234.1
D 2 207 102723 435.32 834 796 234.1

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