ASTROSAT CZTI

Data Quality Report

Orbit 57210

Creation date: 2026-04-29T22:07:39.424837
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_57210cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57210cztM0_level2_quad_clean.evt
Size (bytes)814,328,64092,960,640
Size776.6 MB 88.7 MB
Events in quadrant A3,543,794703,856
Events in quadrant B3,720,738755,254
Events in quadrant C10,285,585476,801
Events in quadrant D12,010,812355,657

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163080
B0165210
C0357560
D0408820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7513791.051511%
B75141872.488688%
C7514258934.455683%
D7513349646.532677%

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 7513 7513 29 29 0.39% 0.39%
B 7514 7514 120 120 1.60% 1.60%
C 7514 7514 2005 2005 26.68% 26.68%
D 7513 7513 3105 3105 41.33% 41.33%

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 95 414877 2101.45 799 778 197.1
A 4 236 24944 122.64 799 778 197.1
A 4 3 11969 56.79 799 778 197.1
B 9 251 238476 1399.13 789 759 169.9
B 0 213 83423 486.53 789 759 169.9
B 4 201 54114 314.03 789 759 169.9
C 15 224 7051949 39685.96 652 647 177.7
C 12 254 406639 2284.99 652 647 177.7
C 12 252 101658 568.51 652 647 177.7
D 12 33 9177973 59184.33 549 522 155.1
D 8 240 178747 1149.35 549 522 155.1
D 2 249 164657 1058.49 549 522 155.1

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