ASTROSAT CZTI

Data Quality Report

Orbit 58936

Creation date: 2026-08-19T16:36:55.179759
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_004T07_9000006598_58936cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58936cztM0_level2_quad_clean.evt
Size (bytes)805,219,20070,801,920
Size767.9 MB 67.5 MB
Events in quadrant A5,466,162550,994
Events in quadrant B4,904,735581,963
Events in quadrant C4,562,991558,453
Events in quadrant D14,392,24820,526

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202301
B0188241
C0178061
D0469617

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A618384313.634158%
B618392014.879508%
C61844326.985770%
D6183600997.185832%

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 7103 6183 701 701 9.87% 11.34%
B 7103 6183 522 522 7.35% 8.44%
C 7104 6184 343 343 4.83% 5.55%
D 7102 6182 5645 5645 79.48% 91.31%

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 14 238 2380790 14067.17 684 664 169.2
A 3 95 224137 1320.78 684 664 169.2
A 10 251 64518 377.39 684 664 169.2
B 5 185 1304548 9260.08 660 636 140.8
B 4 171 626340 4443.6 660 636 140.8
B 4 236 124840 882.07 660 636 140.8
C 15 208 1013444 5555.74 667 660 182.3
C 4 5 568410 3114.46 667 660 182.3
C 12 252 214550 1173.32 667 660 182.3
D 12 110 12597440 128580.62 339 323 98.0
D 11 129 235540 2400.89 339 323 98.0
D 2 252 47512 481.67 339 323 98.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct