ASTROSAT CZTI

Data Quality Report

Orbit 56944

Creation date: 2026-04-07T16:26:41.165209
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_56944cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56944cztM0_level2_quad_clean.evt
Size (bytes)725,613,12078,206,400
Size692.0 MB 74.6 MB
Events in quadrant A5,697,914533,878
Events in quadrant B6,773,771563,068
Events in quadrant C3,040,628589,607
Events in quadrant D10,862,187244,826

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212692
B0245122
C0136992
D0365074

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A624998315.730517%
B6249119119.059049%
C62501221.952000%
D6249379360.697712%

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 7278 6248 870 870 11.95% 13.92%
B 7278 6248 879 879 12.08% 14.07%
C 7279 6249 21 21 0.29% 0.34%
D 7278 6248 3159 3159 43.40% 50.56%

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 2715127 16870.41 650 632 160.9
A 4 249 148007 915.93 650 632 160.9
A 3 14 124527 770.0 650 632 160.9
B 5 172 2624810 20382.33 611 588 128.7
B 0 171 561886 4359.6 611 588 128.7
B 10 16 500859 3885.6 611 588 128.7
C 13 3 273500 1513.03 664 657 180.3
C 14 254 66158 363.23 664 657 180.3
C 7 2 44076 240.78 664 657 180.3
D 12 33 7822983 57051.83 482 460 137.1
D 12 1 256893 1870.24 482 460 137.1
D 8 240 252260 1836.45 482 460 137.1

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