ASTROSAT CZTI

Data Quality Report

Orbit 14878

Creation date: 2024-06-27T17:00:48.959292
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/AS1T02_054T01_9000002200_14878cztM0_level2.evt modeM0/AS1T02_054T01_9000002200_14878cztM0_level2_quad_clean.evt
Size (bytes)469,025,280117,354,240
Size447.3 MB 111.9 MB
Events in quadrant A3,220,291789,035
Events in quadrant B3,437,058789,194
Events in quadrant C3,304,081787,213
Events in quadrant D3,816,760750,886

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134730
B0141040
C0137250
D0152650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6274751.195410%
B6274931.482308%
C6274741.179471%
D62743034.829455%

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 7509 6275 3 3 0.04% 0.05%
B 7509 6275 12 12 0.16% 0.19%
C 7509 6275 2 2 0.03% 0.03%
D 7509 6275 233 233 3.10% 3.71%

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 12 189 44231 265.69 817 801 163.5
A 13 248 23411 138.32 817 801 163.5
A 0 226 7282 39.65 817 801 163.5
B 0 219 115212 771.81 802 784 148.3
B 0 189 45534 301.83 802 784 148.3
B 0 228 38184 252.26 802 784 148.3
C 3 233 171948 950.28 798 803 180.1
C 14 234 8435 42.38 798 803 180.1
C 0 207 6848 33.56 798 803 180.1
D 13 104 693900 3557.09 790 770 194.9
D 7 254 64922 329.22 790 770 194.9
D 7 38 28063 140.07 790 770 194.9

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