ASTROSAT CZTI

Data Quality Report

Orbit 20351

Creation date: 2024-06-27T18:14:16.201246
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/AS1A05_163T01_9000003010_20351cztM0_level2.evt modeM0/AS1A05_163T01_9000003010_20351cztM0_level2_quad_clean.evt
Size (bytes)436,075,20094,881,600
Size415.9 MB 90.5 MB
Events in quadrant A3,115,311620,144
Events in quadrant B3,230,660639,592
Events in quadrant C3,142,601602,206
Events in quadrant D3,301,161583,231

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128992
B0131762
C0130092
D0138502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6138160.260671%
B6138380.619094%
C6137500.814730%
D6137500.814730%

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 7523 6139 0 0 0.00% 0.00%
B 7523 6139 8 8 0.11% 0.13%
C 7522 6138 0 0 0.00% 0.00%
D 7522 6138 52 52 0.69% 0.85%

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 0 226 6807 37.14 808 793 161.9
A 13 254 6626 36.02 808 793 161.9
A 3 137 6259 33.75 808 793 161.9
B 0 85 36547 236.84 808 789 151.0
B 12 111 18239 115.58 808 789 151.0
B 0 214 17703 112.03 808 789 151.0
C 14 238 122827 682.03 772 781 178.9
C 1 16 5443 26.05 772 781 178.9
C 13 61 5403 25.83 772 781 178.9
D 1 52 365592 1960.03 773 752 186.1
D 2 234 21051 109.05 773 752 186.1
D 2 184 16180 82.88 773 752 186.1

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