ASTROSAT CZTI

Data Quality Report

Orbit 54442

Creation date: 2025-10-21T17:40:16.969439
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_126T19_9000006518_54442cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54442cztM0_level2_quad_clean.evt
Size (bytes)579,792,96086,944,320
Size552.9 MB 82.9 MB
Events in quadrant A2,857,779639,364
Events in quadrant B3,170,668687,503
Events in quadrant C3,965,492596,202
Events in quadrant D10,952,930248,189

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135322
B0143792
C0166272
D0371262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6611210.317652%
B6611781.179852%
C66113164.779912%
D6611394659.688398%

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 8781 6613 2 2 0.02% 0.03%
B 8781 6613 24 24 0.27% 0.36%
C 8781 6613 223 223 2.54% 3.37%
D 8780 6610 2638 2638 30.05% 39.91%

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 46326 262.51 704 687 173.9
A 4 3 32707 184.17 704 687 173.9
A 8 6 15741 86.59 704 687 173.9
B 5 185 115303 763.67 699 675 150.1
B 10 247 107242 709.96 699 675 150.1
B 8 234 44924 294.79 699 675 150.1
C 4 5 726914 3896.03 673 667 186.4
C 13 3 308606 1651.97 673 667 186.4
C 14 254 64075 340.16 673 667 186.4
D 8 176 7840862 71888.72 373 355 109.1
D 2 172 901188 8259.64 373 355 109.1
D 7 70 302759 2772.71 373 355 109.1

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