ASTROSAT CZTI

Data Quality Report

Orbit 07991

Creation date: 2024-06-27T15:26:27.267820
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/AS1G06_028T01_9000001094_07991cztM0_level2.evt modeM0/AS1G06_028T01_9000001094_07991cztM0_level2_quad_clean.evt
Size (bytes)542,430,72099,656,640
Size517.3 MB 95.0 MB
Events in quadrant A3,319,486651,035
Events in quadrant B3,212,437671,664
Events in quadrant C3,117,517681,585
Events in quadrant D6,366,864589,885

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139162
B0135351
C0130741
D0231031

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6072590.971673%
B6072841.383399%
C6072230.378788%
D607294715.596179%

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 7257 6073 9 9 0.12% 0.15%
B 7257 6073 20 20 0.28% 0.33%
C 7257 6073 0 0 0.00% 0.00%
D 7257 6073 762 762 10.50% 12.55%

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 15 239 327915 2154.55 745 730 151.9
A 4 2 94252 615.85 745 730 151.9
A 13 248 22074 140.55 745 730 151.9
B 4 239 195188 1367.43 755 740 142.2
B 0 214 24141 164.56 755 740 142.2
B 11 51 18396 124.16 755 740 142.2
C 1 16 225413 1311.91 740 748 171.2
C 13 61 5625 28.48 740 748 171.2
C 12 4 3622 16.78 740 748 171.2
D 1 83 3224202 19282.86 682 662 167.2
D 1 52 288581 1722.3 682 662 167.2
D 12 233 153220 912.59 682 662 167.2

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