ASTROSAT CZTI

Data Quality Report

Orbit 54569

Creation date: 2025-10-29T22:25:28.583041
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_127T09_9000006520_54569cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54569cztM0_level2_quad_clean.evt
Size (bytes)873,253,440179,547,840
Size832.8 MB 171.2 MB
Events in quadrant A8,727,3761,111,807
Events in quadrant B8,591,9861,233,855
Events in quadrant C6,955,9891,121,732
Events in quadrant D7,038,5021,067,693

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0342853
B0345303
C0300843
D0300663

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1304111058.473277%
B130419066.947320%
C130414203.220612%
D130412912.231424%

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 14671 13044 764 764 5.21% 5.86%
B 14671 13044 368 368 2.51% 2.82%
C 14671 13044 164 164 1.12% 1.26%
D 14671 13044 48 48 0.33% 0.37%

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 11 3 2290926 6703.04 1395 1358 341.6
A 14 235 413468 1206.51 1395 1358 341.6
A 4 3 189440 550.64 1395 1358 341.6
B 2 249 1010078 3401.52 1392 1343 296.6
B 4 171 454590 1528.38 1392 1343 296.6
B 0 213 407148 1368.4 1392 1343 296.6
C 13 3 412427 1088.91 1388 1374 377.5
C 14 254 352760 930.85 1388 1374 377.5
C 9 38 97714 255.21 1388 1374 377.5
D 3 12 490537 1248.43 1398 1339 391.9
D 2 172 205990 522.27 1398 1339 391.9
D 15 94 178816 452.92 1398 1339 391.9

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