ASTROSAT CZTI

Data Quality Report

Orbit 16864

Creation date: 2024-06-27T17:28:51.749140
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_034T01_9000002500_16864cztM0_level2.evt modeM0/AS1T03_034T01_9000002500_16864cztM0_level2_quad_clean.evt
Size (bytes)585,069,12083,891,520
Size558.0 MB 80.0 MB
Events in quadrant A3,444,319539,332
Events in quadrant B3,598,825547,541
Events in quadrant C3,246,706530,443
Events in quadrant D6,994,226475,455

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140033
B0144072
C0132862
D0252082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64061091.701530%
B6406781.217608%
C6406851.326881%
D6406159624.914143%

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 7577 6408 19 19 0.25% 0.30%
B 7577 6408 3 3 0.04% 0.05%
C 7577 6408 2 2 0.03% 0.03%
D 7577 6408 481 481 6.35% 7.51%

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 23 186955 1106.12 831 813 168.3
A 9 143 30971 179.21 831 813 168.3
A 0 226 18507 105.14 831 813 168.3
B 15 35 208572 1341.51 821 802 154.9
B 4 216 51496 327.32 821 802 154.9
B 0 189 37621 237.73 821 802 154.9
C 14 238 124885 665.65 798 805 186.4
C 0 207 9507 46.68 798 805 186.4
C 13 61 5622 25.84 798 805 186.4
D 1 52 4029557 21927.43 751 730 183.7
D 10 70 83978 453.09 751 730 183.7
D 2 234 25966 137.35 751 730 183.7

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