ASTROSAT CZTI

Data Quality Report

Orbit 16604

Creation date: 2024-06-27T17:24:59.068395
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/AS1C04_009T01_9000002448_16604cztM0_level2.evt modeM0/AS1C04_009T01_9000002448_16604cztM0_level2_quad_clean.evt
Size (bytes)451,589,760127,765,440
Size430.7 MB 121.8 MB
Events in quadrant A3,157,905844,484
Events in quadrant B3,577,580873,239
Events in quadrant C3,461,900857,892
Events in quadrant D3,029,281832,976

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141073
B0151982
C0145022
D0138712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66131261.905338%
B66131311.980947%
C66131221.844851%
D6613550.831695%

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 7629 6615 62 62 0.81% 0.94%
B 7629 6615 39 39 0.51% 0.59%
C 7629 6615 0 0 0.00% 0.00%
D 7629 6615 15 15 0.20% 0.23%

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 15 174 214834 1400.89 757 740 152.8
A 9 143 24378 154.67 757 740 152.8
A 15 69 7145 41.91 757 740 152.8
B 15 35 245881 1695.99 772 752 144.5
B 15 19 90835 623.26 772 752 144.5
B 0 189 43145 293.31 772 752 144.5
C 7 247 211404 1211.66 753 759 173.8
C 3 233 198533 1137.63 753 759 173.8
C 14 238 117169 669.61 753 759 173.8
D 10 70 104936 566.93 753 729 183.8
D 2 234 27067 143.29 753 729 183.8
D 1 52 25584 135.22 753 729 183.8

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