ASTROSAT CZTI

Data Quality Report

Orbit 15561

Creation date: 2024-06-27T17:10:31.460182
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/AS1G08_028T01_9000002306_15561cztM0_level2.evt modeM0/AS1G08_028T01_9000002306_15561cztM0_level2_quad_clean.evt
Size (bytes)296,559,36062,415,360
Size282.8 MB 59.5 MB
Events in quadrant A2,037,998413,913
Events in quadrant B2,128,163415,949
Events in quadrant C2,054,799399,856
Events in quadrant D2,499,076389,804

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082632
B085311
C082561
D097791

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A38221042.721088%
B38221132.956567%
C38221223.192046%
D38221353.532182%

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 5088 3823 1 1 0.02% 0.03%
B 5088 3823 1 1 0.02% 0.03%
C 5088 3823 0 0 0.00% 0.00%
D 5088 3823 40 40 0.79% 1.05%

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 13 248 4794 40.01 526 516 106.9
A 0 226 4644 38.6 526 516 106.9
A 7 16 4520 37.44 526 516 106.9
B 4 216 39952 394.91 518 506 99.9
B 0 189 13553 130.62 518 506 99.9
B 12 111 11285 107.91 518 506 99.9
C 14 238 76176 639.84 499 505 118.3
C 3 233 21515 177.65 499 505 118.3
C 0 207 7217 56.75 499 505 118.3
D 12 221 302008 2299.51 508 496 131.1
D 13 172 131165 996.56 508 496 131.1
D 5 222 39719 299.14 508 496 131.1

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