ASTROSAT CZTI

Data Quality Report

Orbit 57660

Creation date: 2026-05-25T21:09:24.302002
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_125T09_9000006578_57660cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57660cztM0_level2_quad_clean.evt
Size (bytes)473,555,520105,704,640
Size451.6 MB 100.8 MB
Events in quadrant A3,072,325697,229
Events in quadrant B3,403,884747,155
Events in quadrant C5,657,950637,156
Events in quadrant D4,825,428608,737

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147300
B0154170
C0219040
D0191570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A733250.068194%
B7332310.422804%
C73334576.232101%
D73332803.818355%

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 7332 7332 0 0 0.00% 0.00%
B 7332 7332 14 14 0.19% 0.19%
C 7333 7333 401 401 5.47% 5.47%
D 7333 7333 273 273 3.72% 3.72%

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 13 248 14655 71.72 785 767 193.6
A 3 137 9695 46.11 785 767 193.6
A 13 254 9582 45.52 785 767 193.6
B 10 247 99672 597.83 774 746 165.5
B 0 245 84281 504.82 774 746 165.5
B 4 201 35715 211.33 774 746 165.5
C 15 224 1247251 6132.77 743 736 203.3
C 12 254 393218 1930.98 743 736 203.3
C 14 254 319112 1566.39 743 736 203.3
D 8 240 653120 3100.55 749 714 210.4
D 6 29 344567 1634.16 749 714 210.4
D 3 12 227975 1080.05 749 714 210.4

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