ASTROSAT CZTI

Data Quality Report

Orbit 58527

Creation date: 2026-07-23T11:28:50.155789
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_044T04_9000006592_58527cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58527cztM0_level2_quad_clean.evt
Size (bytes)548,349,12091,025,280
Size522.9 MB 86.8 MB
Events in quadrant A3,668,736638,792
Events in quadrant B3,637,556698,628
Events in quadrant C4,655,689584,011
Events in quadrant D7,840,932390,400

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150712
B0150322
C0183042
D0277952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63661792.811813%
B63661191.869306%
C63665398.466855%
D6366209532.909205%

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 7576 6367 132 132 1.74% 2.07%
B 7576 6367 46 46 0.61% 0.72%
C 7576 6367 448 448 5.91% 7.04%
D 7576 6366 2061 2061 27.20% 32.38%

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 10 17 469383 2663.51 711 694 176.0
A 3 14 118824 671.32 711 694 176.0
A 12 114 116196 656.39 711 694 176.0
B 0 171 226081 1478.82 714 689 152.4
B 4 171 163629 1069.07 714 689 152.4
B 8 234 163493 1068.18 714 689 152.4
C 5 10 1379896 7380.37 675 671 186.9
C 6 223 344618 1840.49 675 671 186.9
C 14 254 69642 369.07 675 671 186.9
D 2 249 4888419 32053.69 532 508 152.5
D 3 12 234919 1537.21 532 508 152.5
D 9 102 196369 1284.41 532 508 152.5

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