ASTROSAT CZTI

Data Quality Report

Orbit 57286

Creation date: 2026-04-30T20:27:53.860662
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_049T03_9000006570_57286cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57286cztM0_level2_quad_clean.evt
Size (bytes)1,270,702,080254,050,560
Size1.2 GB 242.3 MB
Events in quadrant A8,709,1031,700,054
Events in quadrant B9,389,6331,805,673
Events in quadrant C14,847,6121,531,165
Events in quadrant D12,655,3181,377,638

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0388035
B0411314
C0568984
D0508694

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185333311.786003%
B185346243.366785%
C1853415898.573433%
D1853418279.857559%

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 19943 18537 27 27 0.14% 0.15%
B 19944 18538 176 176 0.88% 0.95%
C 19944 18538 1082 1082 5.43% 5.84%
D 19944 18538 1214 1214 6.09% 6.55%

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 4 619452 1262.62 1991 1939 489.1
A 7 64 180833 365.78 1991 1939 489.1
A 3 14 72069 143.39 1991 1939 489.1
B 5 185 637075 1536.71 1943 1868 413.4
B 10 16 310559 746.79 1943 1868 413.4
B 7 252 188108 450.56 1943 1868 413.4
C 15 224 6354149 12545.97 1872 1853 506.3
C 12 252 361905 711.11 1872 1853 506.3
C 14 254 257069 504.06 1872 1853 506.3
D 3 224 3954962 7597.35 1849 1765 520.3
D 8 240 447725 857.06 1849 1765 520.3
D 7 96 327515 626.03 1849 1765 520.3

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