ASTROSAT CZTI

Data Quality Report

Orbit 17285

Creation date: 2024-06-27T17:34:32.652533
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_010T02_9000002556_17285cztM0_level2.evt modeM0/AS1A05_010T02_9000002556_17285cztM0_level2_quad_clean.evt
Size (bytes)27,573,1204,262,400
Size26.3 MB 4.1 MB
Events in quadrant A98,09928,540
Events in quadrant B105,08828,536
Events in quadrant C100,23726,462
Events in quadrant D512,09920,243

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04860
C04730
D016810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23600.000000%
B23600.000000%
C23610.423729%
D23612954.661017%

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 236 236 0 0 0.00% 0.00%
B 236 236 0 0 0.00% 0.00%
C 236 236 0 0 0.00% 0.00%
D 236 236 151 151 63.98% 63.98%

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 0 226 222 27.38 25 24 7.2
A 3 137 189 22.82 25 24 7.2
A 12 194 187 22.54 25 24 7.2
B 15 201 4878 683.54 25 24 7.1
B 12 111 618 83.65 25 24 7.1
B 11 111 513 68.86 25 24 7.1
C 14 238 3673 480.2 24 24 7.6
C 3 233 1277 164.89 24 24 7.6
C 13 61 180 20.53 24 24 7.6
D 11 176 423643 61126.54 20 20 6.9
D 13 189 3445 494.21 20 20 6.9
D 13 232 2398 343.13 20 20 6.9

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