ASTROSAT CZTI

Data Quality Report

Orbit 27689

Creation date: 2024-06-27T19:43:07.990998
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/AS1A09_038T41_9000003986_27689cztM0_level2.evt modeM0/AS1A09_038T41_9000003986_27689cztM0_level2_quad_clean.evt
Size (bytes)385,289,28096,756,480
Size367.4 MB 92.3 MB
Events in quadrant A2,310,607672,886
Events in quadrant B2,655,043679,611
Events in quadrant C2,516,938633,481
Events in quadrant D3,852,547600,480

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102350
B0112210
C0108180
D0148280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4906420.856095%
B49061102.242152%
C4906801.630656%
D49064338.825927%

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 5961 4906 1 1 0.02% 0.02%
B 5961 4906 43 43 0.72% 0.88%
C 5961 4906 15 15 0.25% 0.31%
D 5961 4906 401 401 6.73% 8.17%

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 13 254 8528 66.95 596 584 118.6
A 8 192 6968 53.81 596 584 118.6
A 3 137 5403 40.62 596 584 118.6
B 5 172 248604 2212.83 596 583 112.1
B 3 64 30767 269.3 596 583 112.1
B 0 230 22653 196.91 596 583 112.1
C 8 208 209031 1578.34 565 567 132.1
C 14 238 92447 695.65 565 567 132.1
C 3 233 8839 62.63 565 567 132.1
D 1 52 926577 7049.98 553 537 131.4
D 6 112 542865 4128.77 553 537 131.4
D 2 250 94559 715.79 553 537 131.4

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