ASTROSAT CZTI

Data Quality Report

Orbit 54530

Creation date: 2025-10-27T06:24:29.102858
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_54530cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54530cztM0_level2_quad_clean.evt
Size (bytes)502,205,76096,200,640
Size478.9 MB 91.7 MB
Events in quadrant A3,291,969653,352
Events in quadrant B3,917,975683,392
Events in quadrant C6,711,657544,040
Events in quadrant D4,164,111579,847

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144772
B0162472
C0245062
D0168472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64901352.080123%
B64903405.238829%
C6491107416.545987%
D64911792.757664%

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 8745 6492 27 27 0.31% 0.42%
B 8745 6492 153 153 1.75% 2.36%
C 8746 6492 875 875 10.00% 13.48%
D 8746 6493 109 109 1.25% 1.68%

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 173667 945.57 742 725 182.9
A 11 3 114400 621.52 742 725 182.9
A 4 3 46570 250.66 742 725 182.9
B 5 185 602081 3836.92 728 702 156.7
B 1 207 88313 558.98 728 702 156.7
B 2 249 85499 541.02 728 702 156.7
C 4 5 2693016 14469.31 673 668 186.1
C 13 3 551524 2960.43 673 668 186.1
C 12 252 489742 2628.4 673 668 186.1
D 10 181 404629 1936.35 719 686 208.6
D 2 172 334200 1598.74 719 686 208.6
D 7 70 251808 1203.78 719 686 208.6

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