ASTROSAT CZTI

Data Quality Report

Orbit 58075

Creation date: 2026-06-22T18:08:25.569942
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_031T01_9000006584_58075cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_58075cztM0_level2_quad_clean.evt
Size (bytes)668,399,04086,719,680
Size637.4 MB 82.7 MB
Events in quadrant A3,146,392641,862
Events in quadrant B4,542,951667,839
Events in quadrant C4,586,714587,020
Events in quadrant D11,978,613290,446

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135211
B0176901
C0179061
D0399351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6279821.305940%
B62803155.015924%
C62803856.130573%
D6280343354.665605%

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 7449 6280 29 29 0.39% 0.46%
B 7450 6281 187 187 2.51% 2.98%
C 7450 6281 379 379 5.09% 6.03%
D 7450 6281 3099 3099 41.60% 49.34%

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 10 251 183440 1030.13 718 699 177.4
A 3 14 64363 358.88 718 699 177.4
A 13 248 54387 302.64 718 699 177.4
B 10 128 1355779 9067.54 693 670 149.4
B 4 171 88422 587.18 693 670 149.4
B 2 249 74714 495.46 693 670 149.4
C 12 252 1683487 9067.81 674 667 185.6
C 12 254 129591 694.7 674 667 185.6
C 15 201 50908 270.72 674 667 185.6
D 12 110 5511797 36461.96 536 512 151.2
D 8 160 1747596 11558.48 536 512 151.2
D 2 120 1296900 8576.74 536 512 151.2

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