ASTROSAT CZTI

Data Quality Report

Orbit 37822

Creation date: 2024-06-27T21:44:54.924882
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/AS1T05_054T01_9000005350_37822cztM0_level2.evt modeM0/AS1T05_054T01_9000005350_37822cztM0_level2_quad_clean.evt
Size (bytes)424,301,76095,057,280
Size404.6 MB 90.7 MB
Events in quadrant A3,064,973627,950
Events in quadrant B2,840,425643,941
Events in quadrant C2,890,046638,839
Events in quadrant D3,692,097594,404

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122903
B0117202
C0118412
D0143742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5330581.088180%
B5330230.431520%
C5330280.525328%
D53301853.470919%

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 7153 5331 36 36 0.50% 0.68%
B 7153 5331 10 10 0.14% 0.19%
C 7153 5331 14 14 0.20% 0.26%
D 7153 5331 202 202 2.82% 3.79%

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 10 83 357119 2752.57 644 633 129.5
A 9 143 155127 1192.91 644 633 129.5
A 12 189 25285 190.35 644 633 129.5
B 0 229 134244 1099.91 637 621 121.5
B 0 189 51604 419.66 637 621 121.5
B 4 81 42714 346.48 637 621 121.5
C 15 214 245788 1707.97 624 629 143.5
C 0 10 129403 897.14 624 629 143.5
C 15 159 43657 299.77 624 629 143.5
D 2 249 394247 2610.7 620 605 150.8
D 7 223 324119 2145.6 620 605 150.8
D 12 218 237014 1567.9 620 605 150.8

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