ASTROSAT CZTI

Data Quality Report

Orbit 58848

Creation date: 2026-08-14T10:07:39.510956
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_106T01_9000006596_58848cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58848cztM0_level2_quad_clean.evt
Size (bytes)703,117,44084,562,560
Size670.5 MB 80.6 MB
Events in quadrant A13,391,137202,356
Events in quadrant B4,967,224696,461
Events in quadrant C3,185,036627,953
Events in quadrant D3,980,577582,075

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044409106
B01895469
C01409857
D01611562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01322
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6474481474.358974%
B64752964.571429%
C64781261.945045%
D64762533.906733%

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 7602 6482 3925 3925 51.63% 60.55%
B 7615 6483 115 115 1.51% 1.77%
C 7617 6490 25 25 0.33% 0.39%
D 7617 6486 137 137 1.80% 2.11%

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 7651179 76592.55 405 394 99.9
A 3 95 2077294 20791.99 405 394 99.9
A 14 238 1084684 10854.9 405 394 99.9
B 15 32 750260 4787.28 730 705 156.6
B 2 249 548751 3500.28 730 705 156.6
B 5 185 191396 1217.91 730 705 156.6
C 6 223 89113 447.39 720 710 197.6
C 14 254 83054 416.72 720 710 197.6
C 12 249 45905 228.72 720 710 197.6
D 8 160 283402 1366.93 723 690 206.8
D 2 249 268390 1294.35 723 690 206.8
D 12 110 177712 855.91 723 690 206.8

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