ASTROSAT CZTI

Data Quality Report

Orbit 06676

Creation date: 2024-06-27T15:10:11.468384
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_102T01_9000000912_06676cztM0_level2.evt modeM0/AS1G06_102T01_9000000912_06676cztM0_level2_quad_clean.evt
Size (bytes)615,326,400103,538,880
Size586.8 MB 98.7 MB
Events in quadrant A4,500,845657,243
Events in quadrant B3,604,039666,572
Events in quadrant C3,551,908663,286
Events in quadrant D6,458,587615,284

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188933
B0160382
C0162542
D0247512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76592232.911607%
B76591351.762632%
C7659851.109805%
D7659122816.033425%

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 7969 7661 8 8 0.10% 0.10%
B 7969 7661 1 1 0.01% 0.01%
C 7969 7661 16 16 0.20% 0.21%
D 7969 7661 925 925 11.61% 12.07%

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 13 251 650370 3535.84 889 866 183.7
A 8 15 290495 1576.71 889 866 183.7
A 0 23 79036 425.55 889 866 183.7
B 4 81 45593 258.68 901 878 172.9
B 0 214 34325 193.5 901 878 172.9
B 12 111 17772 97.73 901 878 172.9
C 9 247 171745 848.57 865 865 201.4
C 13 61 6835 29.65 865 865 201.4
C 1 3 5683 23.93 865 865 201.4
D 2 33 2902345 14968.8 781 756 193.8
D 2 152 229095 1177.96 781 756 193.8
D 6 112 219572 1128.83 781 756 193.8

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