ASTROSAT CZTI

Data Quality Report

Orbit 03834

Creation date: 2024-06-27T14:34:09.144417
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_189T01_9000000492_03834cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03834cztM0_level2_quad_clean.evt
Size (bytes)382,426,56065,609,280
Size364.7 MB 62.6 MB
Events in quadrant A2,992,528404,928
Events in quadrant B2,900,828409,116
Events in quadrant C2,649,784394,032
Events in quadrant D2,655,755385,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124992
B0120331
C0116761
D0119851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5626621.102026%
B5626641.137576%
C5626540.959829%
D5626460.817632%

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 6851 5626 10 10 0.15% 0.18%
B 6851 5626 2 2 0.03% 0.04%
C 6851 5626 6 6 0.09% 0.11%
D 6851 5627 20 20 0.29% 0.36%

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 15 234 311004 2232.7 682 669 139.0
A 13 251 27296 191.57 682 669 139.0
A 0 199 17718 122.66 682 669 139.0
B 15 204 110627 842.63 686 670 130.5
B 14 167 79863 606.87 686 670 130.5
B 4 81 33933 254.9 686 670 130.5
C 2 53 51538 332.89 651 655 152.9
C 9 247 17428 109.73 651 655 152.9
C 10 65 14551 90.91 651 655 152.9
D 13 248 163204 1018.89 651 633 159.6
D 2 14 17684 106.86 651 633 159.6
D 13 223 10652 62.79 651 633 159.6

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
Veto Counter