ASTROSAT CZTI

Data Quality Report

Orbit 11855

Creation date: 2024-06-27T16:19:11.553683
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/AS1A04_088T03_9000001750_11855cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11855cztM0_level2_quad_clean.evt
Size (bytes)477,069,12093,767,040
Size455.0 MB 89.4 MB
Events in quadrant A3,329,047610,301
Events in quadrant B4,101,928613,074
Events in quadrant C2,999,552597,880
Events in quadrant D3,574,007563,125

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140623
B0165002
C0135072
D0152784

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6529801.225302%
B65293535.406647%
C6529410.627968%
D65281932.956495%

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 9150 6533 1 1 0.01% 0.02%
B 9150 6533 152 152 1.66% 2.33%
C 9150 6533 0 0 0.00% 0.00%
D 9150 6533 95 95 1.04% 1.45%

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 1 162 91841 561.76 801 786 162.1
A 1 178 48197 292.5 801 786 162.1
A 1 161 42421 256.87 801 786 162.1
B 4 239 850562 5657.71 788 769 150.2
B 15 204 53597 351.72 788 769 150.2
B 11 51 26067 168.43 788 769 150.2
C 13 61 5590 27.12 769 773 177.6
C 12 4 2722 10.97 769 773 177.6
C 3 202 1881 6.24 769 773 177.6
D 9 85 275727 1543.41 752 730 178.2
D 1 52 256868 1437.57 752 730 178.2
D 13 104 91843 511.37 752 730 178.2

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