ASTROSAT CZTI

Data Quality Report

Orbit 55942

Creation date: 2026-02-05T15:17:58.692345
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_066T02_9000006546_55942cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55942cztM0_level2_quad_clean.evt
Size (bytes)399,718,08097,588,800
Size381.2 MB 93.1 MB
Events in quadrant A3,084,787643,114
Events in quadrant B3,083,730684,769
Events in quadrant C4,422,407574,533
Events in quadrant D3,674,679577,601

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142852
B0144672
C0182342
D0159842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6815260.381511%
B6815771.129861%
C68154987.307410%
D6815620.909758%

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 7800 6816 7 7 0.09% 0.10%
B 7800 6816 30 30 0.38% 0.44%
C 7800 6816 421 421 5.40% 6.18%
D 7800 6816 53 53 0.68% 0.78%

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 165138 915.78 719 701 179.6
A 12 115 80439 444.07 719 701 179.6
A 4 3 19621 105.37 719 701 179.6
B 7 252 173811 1134.96 711 685 152.5
B 12 111 18558 117.17 711 685 152.5
B 11 111 17726 111.72 711 685 152.5
C 13 3 799999 4271.53 680 676 187.1
C 12 252 391689 2089.55 680 676 187.1
C 15 199 217337 1157.82 680 676 187.1
D 8 160 263053 1327.63 697 666 197.6
D 11 129 116601 586.61 697 666 197.6
D 1 31 81205 407.51 697 666 197.6

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