ASTROSAT CZTI

Data Quality Report

Orbit 56636

Creation date: 2026-03-17T22:47:25.526077
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_083T06_9000006558_56636cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56636cztM0_level2_quad_clean.evt
Size (bytes)392,734,08084,646,080
Size374.5 MB 80.7 MB
Events in quadrant A4,104,079539,163
Events in quadrant B2,986,373608,209
Events in quadrant C3,407,232514,448
Events in quadrant D3,583,756491,834

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163152
B0127761
C0142591
D0148141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58624177.113613%
B5863751.279209%
C58632394.076411%
D58632374.042299%

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 6967 5863 388 388 5.57% 6.62%
B 6968 5864 15 15 0.22% 0.26%
C 6968 5864 171 171 2.45% 2.92%
D 6968 5864 179 179 2.57% 3.05%

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 909244 5896.28 616 601 154.1
A 10 251 422143 2735.43 616 601 154.1
A 6 179 216563 1401.4 616 601 154.1
B 4 21 200272 1489.68 620 597 134.0
B 0 197 117002 868.44 620 597 134.0
B 10 247 72681 537.79 620 597 134.0
C 14 96 519171 3225.38 584 579 160.8
C 1 16 178845 1108.72 584 579 160.8
C 13 3 138026 854.85 584 579 160.8
D 6 239 501103 2960.92 591 564 169.0
D 2 249 387626 2289.65 591 564 169.0
D 2 31 89168 524.13 591 564 169.0

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