ASTROSAT CZTI

Data Quality Report

Orbit 21858

Creation date: 2024-06-27T18:33:07.897148
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/AS1A07_118T01_9000003232_21858cztM0_level2.evt modeM0/AS1A07_118T01_9000003232_21858cztM0_level2_quad_clean.evt
Size (bytes)493,704,00091,065,600
Size470.8 MB 86.8 MB
Events in quadrant A3,241,500586,120
Events in quadrant B3,424,077606,330
Events in quadrant C3,280,819578,346
Events in quadrant D4,568,212537,829

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136862
B0141172
C0136952
D0177872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6434811.258937%
B64341251.942804%
C64331241.927561%
D64343074.771526%

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 8934 6436 7 7 0.08% 0.11%
B 8934 6436 14 14 0.16% 0.22%
C 8933 6434 3 3 0.03% 0.05%
D 8934 6436 269 269 3.01% 4.18%

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 4 2 58642 346.55 824 808 166.9
A 13 254 11954 66.79 824 808 166.9
A 0 226 7247 38.58 824 808 166.9
B 3 64 93876 585.73 832 811 158.9
B 0 230 28972 177.24 832 811 158.9
B 0 190 28797 176.14 832 811 158.9
C 14 238 126141 675.35 794 802 185.6
C 5 112 29645 155.41 794 802 185.6
C 0 10 29613 155.24 794 802 185.6
D 1 52 812299 4245.61 783 762 191.1
D 7 238 512334 2676.32 783 762 191.1
D 13 104 190820 994.3 783 762 191.1

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