ASTROSAT CZTI

Data Quality Report

Orbit 27674

Creation date: 2024-06-27T19:42:50.999131
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/AS1T03_257T01_9000003976_27674cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27674cztM0_level2_quad_clean.evt
Size (bytes)493,107,84096,569,280
Size470.3 MB 92.1 MB
Events in quadrant A3,206,038638,921
Events in quadrant B3,270,834656,969
Events in quadrant C3,299,391612,599
Events in quadrant D4,731,177577,561

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135490
B0136510
C0137650
D0183120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6281500.796052%
B6281490.780131%
C6282821.305317%
D62823094.918816%

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 7536 6281 9 9 0.12% 0.14%
B 7536 6281 0 0 0.00% 0.00%
C 7537 6282 0 0 0.00% 0.00%
D 7537 6282 229 229 3.04% 3.65%

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 13 248 38776 233.84 817 802 162.4
A 13 254 11285 64.55 817 802 162.4
A 8 192 8598 48.01 817 802 162.4
B 0 230 36354 235.79 816 799 150.8
B 12 111 17616 111.53 816 799 150.8
B 11 111 15637 98.4 816 799 150.8
C 14 238 128118 699.05 783 790 182.1
C 3 233 89945 489.47 783 790 182.1
C 15 208 20766 109.67 783 790 182.1
D 1 52 625309 3402.23 774 752 183.6
D 2 250 509338 2770.49 774 752 183.6
D 12 2 479583 2608.4 774 752 183.6

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter