ASTROSAT CZTI

Data Quality Report

Orbit 58406

Creation date: 2026-07-15T02:12:25.542560
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_045T01_9000006590_58406cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58406cztM0_level2_quad_clean.evt
Size (bytes)746,282,88079,562,880
Size711.7 MB 75.9 MB
Events in quadrant A8,450,382534,218
Events in quadrant B11,328,059314,207
Events in quadrant C3,191,358578,343
Events in quadrant D4,164,046539,385

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293991
B0380181
C0140311
D0167497

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6342102916.225166%
B6343366057.701403%
C6343751.182406%
D63421322.081362%

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 7282 6343 846 846 11.62% 13.34%
B 7283 6341 2514 2514 34.52% 39.65%
C 7283 6344 41 41 0.56% 0.65%
D 7282 6343 122 122 1.68% 1.92%

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 3 14 2257139 13972.77 648 630 161.5
A 4 249 1832523 11343.46 648 630 161.5
A 12 114 924105 5718.35 648 630 161.5
B 6 255 8184037 81464.06 467 450 100.5
B 5 172 779156 7751.68 467 450 100.5
B 4 158 160096 1589.21 467 450 100.5
C 9 38 158066 859.61 664 656 183.1
C 4 5 109869 596.41 664 656 183.1
C 13 3 93532 507.19 664 656 183.1
D 8 240 561253 3006.29 654 624 186.5
D 2 249 314901 1685.26 654 624 186.5
D 12 110 242088 1294.82 654 624 186.5

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