ASTROSAT CZTI

Data Quality Report

Orbit 21826

Creation date: 2024-06-27T18:32:42.877714
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_004T01_9000003230_21826cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21826cztM0_level2_quad_clean.evt
Size (bytes)452,203,20094,127,040
Size431.3 MB 89.8 MB
Events in quadrant A3,134,005618,462
Events in quadrant B3,572,267632,110
Events in quadrant C3,110,973598,063
Events in quadrant D3,457,034569,625

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132722
B0145932
C0131142
D0144772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6202420.677201%
B6202971.564012%
C6202701.128668%
D6202831.338278%

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 7477 6203 0 0 0.00% 0.00%
B 7477 6203 33 33 0.44% 0.53%
C 7477 6202 1 1 0.01% 0.02%
D 7477 6203 51 51 0.68% 0.82%

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 13 252 14250 82.94 807 793 162.3
A 13 254 11933 68.66 807 793 162.3
A 0 226 7224 39.63 807 793 162.3
B 0 245 201984 1333.02 808 792 150.9
B 3 64 100847 662.92 808 792 150.9
B 5 172 57900 378.37 808 792 150.9
C 14 238 121444 674.93 765 772 178.8
C 13 61 5609 27.05 765 772 178.8
C 10 23 3537 15.46 765 772 178.8
D 1 52 373744 2030.13 763 738 183.7
D 13 172 45888 245.73 763 738 183.7
D 15 145 32976 175.46 763 738 183.7

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