ASTROSAT CZTI

Data Quality Report

Orbit 03268

Creation date: 2024-06-27T14:26:54.227551
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/AS1G05_221T01_9000000442_03268cztM0_level2.evt modeM0/AS1G05_221T01_9000000442_03268cztM0_level2_quad_clean.evt
Size (bytes)451,883,52082,558,080
Size430.9 MB 78.7 MB
Events in quadrant A3,051,386519,923
Events in quadrant B3,953,788525,048
Events in quadrant C3,202,865510,460
Events in quadrant D3,036,976492,401

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137023
B0162512
C0141982
D0140162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6479450.694552%
B6479490.756290%
C6479570.879765%
D6479781.203889%

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 7554 6480 12 12 0.16% 0.19%
B 7554 6480 5 5 0.07% 0.08%
C 7554 6480 40 40 0.53% 0.62%
D 7554 6480 64 64 0.85% 0.99%

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 0 118 88393 579.26 733 717 151.4
A 3 1 61233 399.82 733 717 151.4
A 0 50 34329 222.07 733 717 151.4
B 15 204 932622 6417.69 749 732 145.2
B 14 167 52127 353.94 749 732 145.2
B 2 249 40214 271.9 749 732 145.2
C 14 223 224293 1349.37 707 711 165.7
C 1 192 96826 580.08 707 711 165.7
C 12 4 49297 293.23 707 711 165.7
D 13 223 226469 1331.2 696 674 169.6
D 2 248 64401 375.71 696 674 169.6
D 2 31 36494 211.18 696 674 169.6

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