ASTROSAT CZTI

Data Quality Report

Orbit 57166

Creation date: 2026-04-22T15:22:45.724545
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_070T08_9000006568_57166cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57166cztM0_level2_quad_clean.evt
Size (bytes)493,911,360103,417,920
Size471.0 MB 98.6 MB
Events in quadrant A3,079,072691,953
Events in quadrant B3,251,032747,336
Events in quadrant C7,048,232570,491
Events in quadrant D4,331,600609,004

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148750
B0152420
C0260430
D0179970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7367120.162889%
B7367380.515814%
C7368118416.069490%
D73681822.470141%

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 7367 7367 3 3 0.04% 0.04%
B 7367 7367 13 13 0.18% 0.18%
C 7368 7368 853 853 11.58% 11.58%
D 7368 7368 161 161 2.19% 2.19%

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 0 12 22133 111.07 776 756 192.5
A 3 245 15723 77.76 776 756 192.5
A 4 3 14110 69.38 776 756 192.5
B 4 201 37909 223.01 772 742 166.7
B 10 247 24925 145.11 772 742 166.7
B 7 252 23366 135.75 772 742 166.7
C 15 224 2125235 10914.6 707 701 194.7
C 15 198 1112557 5712.06 707 701 194.7
C 13 3 740921 3802.81 707 701 194.7
D 0 19 395529 1866.79 744 708 211.5
D 2 249 319936 1509.38 744 708 211.5
D 8 240 247104 1165.01 744 708 211.5

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