ASTROSAT CZTI

Data Quality Report

Orbit 56826

Creation date: 2026-03-30T17:59:40.144695
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_083T03_9000006562_56826cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56826cztM0_level2_quad_clean.evt
Size (bytes)476,334,720103,187,520
Size454.3 MB 98.4 MB
Events in quadrant A6,113,292675,849
Events in quadrant B3,552,570725,035
Events in quadrant C3,523,264647,012
Events in quadrant D3,922,459609,074

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229822
B0152052
C0151772
D0162032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67091562.325235%
B67091632.429572%
C67091051.565062%
D67091802.682963%

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 7839 6710 32 32 0.41% 0.48%
B 7839 6710 62 62 0.79% 0.92%
C 7839 6710 45 45 0.57% 0.67%
D 7839 6710 139 139 1.77% 2.07%

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 3029743 16333.73 753 734 185.4
A 10 251 69539 371.03 753 734 185.4
A 7 64 59767 318.33 753 734 185.4
B 10 16 218150 1380.35 733 709 157.5
B 5 185 92424 582.22 733 709 157.5
B 4 206 74206 466.57 733 709 157.5
C 8 208 159618 792.76 729 720 200.4
C 9 38 128537 637.69 729 720 200.4
C 15 230 80865 399.85 729 720 200.4
D 2 249 613426 2994.34 731 699 204.6
D 2 120 104219 505.89 731 699 204.6
D 8 160 93362 452.83 731 699 204.6

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