ASTROSAT CZTI

Data Quality Report

Orbit 55182

Creation date: 2025-12-10T03:02:53.995382
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_022T16_9000006532_55182cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55182cztM0_level2_quad_clean.evt
Size (bytes)431,838,72095,307,840
Size411.8 MB 90.9 MB
Events in quadrant A3,791,917629,810
Events in quadrant B3,072,028675,079
Events in quadrant C3,742,373585,336
Events in quadrant D4,865,214535,615

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158622
B0141182
C0158052
D0192922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66031221.847645%
B6603821.241860%
C66042253.407026%
D66045398.161720%

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 8573 6605 65 65 0.76% 0.98%
B 8573 6605 10 10 0.12% 0.15%
C 8574 6606 147 147 1.71% 2.23%
D 8574 6606 390 390 4.55% 5.90%

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 78 494676 2804.7 711 691 176.1
A 12 115 156879 886.79 711 691 176.1
A 4 249 141159 797.53 711 691 176.1
B 10 247 114896 752.57 705 679 151.8
B 2 249 112935 739.64 705 679 151.8
B 5 185 34749 224.48 705 679 151.8
C 10 22 541359 2875.22 689 685 188.0
C 1 16 191798 1016.31 689 685 188.0
C 12 249 88878 469.0 689 685 188.0
D 2 249 1808814 9483.95 674 645 190.7
D 6 239 104261 543.47 674 645 190.7
D 3 12 98276 512.08 674 645 190.7

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