ASTROSAT CZTI

Data Quality Report

Orbit 23790

Creation date: 2024-06-27T18:58:45.258856
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/AS1A07_113T01_9000003526_23790cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23790cztM0_level2_quad_clean.evt
Size (bytes)1,246,435,200189,434,880
Size1.2 GB 180.7 MB
Events in quadrant A6,755,3491,203,660
Events in quadrant B8,205,2191,226,810
Events in quadrant C6,859,4741,190,783
Events in quadrant D14,960,5751,125,247

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02940
B02940
C02940
D02940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292213
B0332553
C0292833
D0545943

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A143431891.317716%
B143444943.443949%
C143442421.687117%
D1434413249.230340%

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 16043 14343 0 0 0.00% 0.00%
B 16044 14344 216 216 1.35% 1.51%
C 16044 14344 1 1 0.01% 0.01%
D 16044 14344 1074 1074 6.69% 7.49%

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 13 254 24966 65.77 1752 1712 353.6
A 3 137 15781 39.79 1752 1712 353.6
A 0 226 15068 37.77 1752 1712 353.6
B 3 64 1299445 3883.62 1736 1691 334.2
B 4 216 54087 156.8 1736 1691 334.2
B 12 111 40924 117.41 1736 1691 334.2
C 14 238 266284 669.13 1681 1686 395.4
C 7 247 31009 74.15 1681 1686 395.4
C 13 61 11763 25.48 1681 1686 395.4
D 8 195 6444247 15850.48 1665 1615 406.5
D 1 52 1323037 3251.03 1665 1615 406.5
D 13 174 336419 823.7 1665 1615 406.5

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