ASTROSAT CZTI

Data Quality Report

Orbit 57132

Creation date: 2026-04-20T08:25:16.888662
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_083T10_9000006566_57132cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57132cztM0_level2_quad_clean.evt
Size (bytes)585,017,28088,277,760
Size557.9 MB 84.2 MB
Events in quadrant A3,062,928652,986
Events in quadrant B3,774,820678,488
Events in quadrant C6,291,429435,668
Events in quadrant D8,022,911454,240

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138402
B0156473
C0231812
D0283852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6472580.896168%
B64713134.836965%
C6471199130.768042%
D6471158924.555710%

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 8852 6473 17 17 0.19% 0.26%
B 8851 6472 219 219 2.47% 3.38%
C 8850 6470 1351 1351 15.27% 20.88%
D 8851 6472 1614 1614 18.24% 24.94%

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 158828 893.86 725 706 176.9
A 10 251 49766 277.34 725 706 176.9
A 5 113 18639 101.38 725 706 176.9
B 10 16 695115 4695.89 698 673 147.9
B 0 213 114193 767.63 698 673 147.9
B 5 185 68870 461.16 698 673 147.9
C 15 198 4108280 29479.81 508 503 139.3
C 12 252 105994 757.07 508 503 139.3
C 14 67 49305 350.23 508 503 139.3
D 15 142 3250634 18113.95 630 600 179.4
D 12 33 1747262 9734.96 630 600 179.4
D 2 249 223269 1241.04 630 600 179.4

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