ASTROSAT CZTI

Data Quality Report

Orbit 53410

Creation date: 2025-08-14T14:33:35.652596
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/AS1C09_011T09_9000006494_53410cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53410cztM0_level2_quad_clean.evt
Size (bytes)998,968,32069,730,560
Size952.7 MB 66.5 MB
Events in quadrant A4,152,435600,357
Events in quadrant B8,945,337470,535
Events in quadrant C15,330,288132,097
Events in quadrant D8,055,950461,392

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168431
B0309971
C0498181
D0283956

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64054066.338798%
B6406221634.592569%
C6406526982.251015%
D6405144022.482436%

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 7455 6405 238 238 3.19% 3.72%
B 7455 6405 1791 1791 24.02% 27.96%
C 7455 6405 5124 5124 68.73% 80.00%
D 7454 6404 1233 1233 16.54% 19.25%

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 63 445200 2659.95 671 653 167.1
A 15 174 418817 2502.09 671 653 167.1
A 7 191 146541 872.92 671 653 167.1
B 4 206 4333712 35554.67 574 553 121.9
B 4 171 894877 7338.16 574 553 121.9
B 2 249 261965 2144.95 574 553 121.9
C 1 241 8464154 89111.92 340 336 95.0
C 15 224 1419391 14940.62 340 336 95.0
C 6 13 1157128 12179.37 340 336 95.0
D 2 172 1599782 9157.6 617 590 174.6
D 2 249 1511534 8652.26 617 590 174.6
D 10 172 1254207 7178.7 617 590 174.6

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