ASTROSAT CZTI

Data Quality Report

Orbit 56350

Creation date: 2026-02-26T18:22:11.416390
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_083T05_9000006554_56350cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56350cztM0_level2_quad_clean.evt
Size (bytes)943,583,04085,164,480
Size899.9 MB 81.2 MB
Events in quadrant A5,548,906652,317
Events in quadrant B6,326,000664,222
Events in quadrant C6,048,258622,059
Events in quadrant D16,434,840127,559

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215042
B0237802
C0230312
D0539052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73576578.930270%
B7357113415.413892%
C735784411.472067%
D7357601881.799647%

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 7807 7357 290 290 3.71% 3.94%
B 7807 7357 659 659 8.44% 8.96%
C 7807 7359 550 550 7.04% 7.47%
D 7806 7357 5625 5625 72.06% 76.46%

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 4 95 798830 3995.28 801 778 199.7
A 3 78 462931 2313.67 801 778 199.7
A 1 191 351136 1753.99 801 778 199.7
B 5 172 1757398 10958.9 746 718 160.3
B 5 185 710373 4427.12 746 718 160.3
B 4 171 192322 1195.31 746 718 160.3
C 15 230 1171902 5603.56 767 761 209.0
C 12 254 871212 4164.85 767 761 209.0
C 13 3 494516 2362.47 767 761 209.0
D 2 62 10966201 83109.22 464 441 131.9
D 8 129 1755393 13300.74 464 441 131.9
D 12 3 754836 5717.54 464 441 131.9

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