ASTROSAT CZTI

Data Quality Report

Orbit 58865

Creation date: 2026-08-15T14:56:23.789172
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_58865cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58865cztM0_level2_quad_clean.evt
Size (bytes)2,303,521,920306,668,160
Size2.1 GB 292.5 MB
Events in quadrant A23,847,1901,984,284
Events in quadrant B32,005,3271,545,215
Events in quadrant C12,518,1532,155,250
Events in quadrant D15,136,0062,027,973

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08674477
B011079599
C05331123
D06004873

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04660
B04660
C04660
D04660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22841334514.644718%
B22838873838.260793%
C228447253.173700%
D228419354.093516%

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 25819 22853 2726 2726 10.56% 11.93%
B 25818 22848 6700 6700 25.95% 29.32%
C 25818 22855 327 327 1.27% 1.43%
D 25818 22849 519 519 2.01% 2.27%

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 15 233 10989025 17792.68 2489 2422 617.5
A 3 14 1221155 1973.72 2489 2422 617.5
A 0 24 592625 955.83 2489 2422 617.5
B 5 172 14427987 31310.72 2186 2104 460.7
B 5 185 5819505 12626.4 2186 2104 460.7
B 2 249 1477918 3203.19 2186 2104 460.7
C 9 38 563227 806.61 2537 2512 695.2
C 12 252 482271 690.15 2537 2512 695.2
C 6 223 477638 683.49 2537 2512 695.2
D 11 129 1582829 2189.39 2549 2436 721.8
D 12 110 1441486 1993.58 2549 2436 721.8
D 5 38 870420 1202.46 2549 2436 721.8

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