ASTROSAT CZTI

Data Quality Report

Orbit 57613

Creation date: 2026-05-22T17:43:42.743377
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_070T08_9000006576_57613cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57613cztM0_level2_quad_clean.evt
Size (bytes)1,761,785,280396,722,880
Size1.6 GB 378.3 MB
Events in quadrant A11,917,8452,651,980
Events in quadrant B13,915,7662,826,676
Events in quadrant C15,380,5052,528,096
Events in quadrant D21,922,8892,159,419

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0548785
B0605375
C0644625
D0838915

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05440
B05440
C05440
D05440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A268582600.968054%
B268577252.699482%
C268576182.301076%
D26858305811.385807%

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 32643 27134 8 8 0.02% 0.03%
B 32642 27133 295 295 0.90% 1.09%
C 32642 27136 358 358 1.10% 1.32%
D 32642 27133 2797 2797 8.57% 10.31%

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 369437 510.59 2953 2878 717.9
A 3 128 74467 99.72 2953 2878 717.9
A 4 3 69269 92.48 2953 2878 717.9
B 5 185 1176817 1920.82 2902 2787 611.2
B 10 247 352445 572.07 2902 2787 611.2
B 0 63 172565 277.77 2902 2787 611.2
C 15 224 2981820 3862.8 2866 2834 771.2
C 9 38 321269 412.91 2866 2834 771.2
C 12 252 256038 328.32 2866 2834 771.2
D 15 142 4660626 6139.74 2696 2572 758.7
D 15 94 1946706 2562.55 2696 2572 758.7
D 2 249 1839337 2421.02 2696 2572 758.7

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