ASTROSAT CZTI

Data Quality Report

Orbit 56923

Creation date: 2026-04-06T07:27:23.693784
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_56923cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56923cztM0_level2_quad_clean.evt
Size (bytes)872,409,60078,681,600
Size832.0 MB 75.0 MB
Events in quadrant A6,025,105621,248
Events in quadrant B4,579,186652,708
Events in quadrant C3,894,734601,640
Events in quadrant D17,250,68618,624

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231822
B0187282
C0168252
D0558202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70054606.566738%
B70064927.022552%
C70061892.697688%
D7006683597.559235%

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 8455 7006 331 331 3.91% 4.72%
B 8456 7007 332 332 3.93% 4.74%
C 8456 7008 168 168 1.99% 2.40%
D 8455 7005 6651 6651 78.66% 94.95%

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 7 64 2796278 15882.63 709 694 176.0
A 11 31 257600 1459.57 709 694 176.0
A 12 15 80005 450.59 709 694 176.0
B 5 172 705396 4736.42 692 667 148.8
B 10 16 638047 4283.77 692 667 148.8
B 5 185 123441 825.15 692 667 148.8
C 13 3 886219 4624.67 696 690 191.5
C 14 254 209078 1088.3 696 690 191.5
C 11 244 24272 123.16 696 690 191.5
D 12 33 14780416 143074.39 355 339 103.3
D 11 129 337295 3261.81 355 339 103.3
D 8 160 317784 3072.94 355 339 103.3

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