ASTROSAT CZTI

Data Quality Report

Orbit 53276

Creation date: 2025-08-03T22:23:59.537399
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_011T08_9000006492_53276cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53276cztM0_level2_quad_clean.evt
Size (bytes)1,521,541,440213,480,000
Size1.4 GB 203.6 MB
Events in quadrant A12,912,7061,415,801
Events in quadrant B10,574,1071,547,331
Events in quadrant C21,618,9171,050,927
Events in quadrant D9,968,5221,332,721

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0493123
B0426183
C0754593
D0409943

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1617211347.012120%
B161729956.152609%
C16172424426.242889%
D161725813.592629%

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 17772 16172 945 945 5.32% 5.84%
B 17772 16172 624 624 3.51% 3.86%
C 17772 16173 4082 4082 22.97% 25.24%
D 17772 16173 430 430 2.42% 2.66%

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 62 2979292 7095.52 1678 1631 419.7
A 3 14 1329440 3164.06 1678 1631 419.7
A 0 8 459830 1091.85 1678 1631 419.7
B 2 249 1138800 3240.47 1665 1603 350.9
B 10 28 792647 2254.1 1665 1603 350.9
B 8 128 728505 2071.32 1665 1603 350.9
C 1 241 5015588 12409.67 1463 1448 404.1
C 15 224 4146531 10258.81 1463 1448 404.1
C 10 22 1847703 4569.36 1463 1448 404.1
D 3 12 560013 1184.02 1647 1573 471.6
D 2 249 473114 999.78 1647 1573 471.6
D 11 176 340034 717.62 1647 1573 471.6

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