ASTROSAT CZTI

Data Quality Report

Orbit 56894

Creation date: 2026-04-04T08:44:48.418290
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_083T14_9000006564_56894cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56894cztM0_level2_quad_clean.evt
Size (bytes)478,800,000103,426,560
Size456.6 MB 98.6 MB
Events in quadrant A3,290,825696,292
Events in quadrant B4,346,468686,173
Events in quadrant C4,534,385636,332
Events in quadrant D4,979,492599,752

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155832
B0183722
C0188702
D0202922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7360710.964674%
B73605347.255435%
C73613084.184214%
D73613765.108002%

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 8810 7362 18 18 0.20% 0.24%
B 8810 7362 276 276 3.13% 3.75%
C 8811 7362 222 222 2.52% 3.02%
D 8811 7363 304 304 3.45% 4.13%

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 13 164769 858.65 764 744 191.0
A 4 78 32342 165.41 764 744 191.0
A 11 31 31436 160.67 764 744 191.0
B 10 16 1147311 7375.03 722 694 155.5
B 5 185 70950 451.88 722 694 155.5
B 10 32 67415 429.15 722 694 155.5
C 13 3 980428 4853.86 734 727 201.8
C 6 223 223103 1101.74 734 727 201.8
C 12 241 150944 744.24 734 727 201.8
D 8 240 916649 4401.22 727 696 208.1
D 8 160 269011 1289.27 727 696 208.1
D 2 249 261263 1252.04 727 696 208.1

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