ASTROSAT CZTI

Data Quality Report

Orbit 54659

Creation date: 2025-11-04T22:02:16.960249
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_066T07_9000006522_54659cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54659cztM0_level2_quad_clean.evt
Size (bytes)548,951,04091,172,160
Size523.5 MB 86.9 MB
Events in quadrant A3,421,662628,347
Events in quadrant B3,648,265673,374
Events in quadrant C3,357,618597,534
Events in quadrant D9,388,502408,251

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147941
B0151172
C0147281
D0324821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64881932.974723%
B64881251.926634%
C64881502.311961%
D6488213532.906905%

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 7528 6488 98 98 1.30% 1.51%
B 7528 6488 26 26 0.35% 0.40%
C 7528 6489 86 86 1.14% 1.33%
D 7528 6488 1802 1802 23.94% 27.77%

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 11 3 429780 2419.47 723 706 177.3
A 13 248 103641 580.43 723 706 177.3
A 0 8 28346 155.86 723 706 177.3
B 5 172 295660 1929.17 711 685 152.9
B 7 0 246204 1605.72 711 685 152.9
B 12 0 120249 781.96 711 685 152.9
C 4 5 379074 1965.49 704 698 192.5
C 9 38 72854 374.82 704 698 192.5
C 6 223 69933 359.64 704 698 192.5
D 11 129 5435029 31825.57 601 574 170.8
D 2 62 610087 3569.47 601 574 170.8
D 15 94 348625 2038.28 601 574 170.8

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