ASTROSAT CZTI

Data Quality Report

Orbit 57234

Creation date: 2026-04-30T14:26:34.035695
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_070T08_9000006568_57234cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57234cztM0_level2_quad_clean.evt
Size (bytes)408,228,48086,659,200
Size389.3 MB 82.6 MB
Events in quadrant A2,899,027571,153
Events in quadrant B3,394,521607,885
Events in quadrant C4,579,178512,969
Events in quadrant D3,750,903494,313

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131042
B0146102
C0181382
D0158772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6267390.622307%
B62672223.542365%
C62674036.430509%
D62672313.685974%

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 7732 6554 12 12 0.16% 0.18%
B 7732 6554 114 114 1.47% 1.74%
C 7731 6552 320 320 4.14% 4.88%
D 7732 6554 208 208 2.69% 3.17%

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 0 128 130968 790.31 669 651 164.9
A 10 251 48469 289.99 669 651 164.9
A 3 14 36186 215.5 669 651 164.9
B 10 16 345894 2467.31 652 628 139.9
B 7 252 192739 1372.85 652 628 139.9
B 0 245 53502 377.84 652 628 139.9
C 15 224 1903504 11187.46 620 612 170.1
C 14 254 149366 874.55 620 612 170.1
C 12 250 26449 151.9 620 612 170.1
D 9 102 369477 2062.34 624 595 178.9
D 8 240 346491 1933.83 624 595 178.9
D 12 128 163724 912.02 624 595 178.9

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