ASTROSAT CZTI

Data Quality Report

Orbit 04139

Creation date: 2024-06-27T14:37:55.522720
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/AS1G05_213T01_9000000534_04139cztM0_level2.evt modeM0/AS1G05_213T01_9000000534_04139cztM0_level2_quad_clean.evt
Size (bytes)424,592,64076,783,680
Size404.9 MB 73.2 MB
Events in quadrant A2,828,742489,246
Events in quadrant B2,907,033493,248
Events in quadrant C2,614,114481,047
Events in quadrant D4,109,595451,177

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123132
B0124441
C0119451
D0165301

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5869480.817857%
B5869150.255580%
C5869100.170387%
D58693225.486454%

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 7199 5869 17 17 0.24% 0.29%
B 7199 5869 1 1 0.01% 0.02%
C 7199 5869 1 1 0.01% 0.02%
D 7199 5870 379 379 5.26% 6.46%

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 0 118 76767 537.55 696 683 141.5
A 15 234 29210 201.55 696 683 141.5
A 13 14 28012 193.09 696 683 141.5
B 10 16 58583 435.39 703 690 133.0
B 14 167 29475 216.48 703 690 133.0
B 0 183 27897 204.61 703 690 133.0
C 10 65 18708 118.18 663 666 152.7
C 1 16 6137 35.84 663 666 152.7
C 13 61 5660 32.71 663 666 152.7
D 1 52 1386110 8665.45 654 633 159.9
D 2 232 114117 709.78 654 633 159.9
D 13 137 27290 166.73 654 633 159.9

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