ASTROSAT CZTI

Data Quality Report

Orbit 21307

Creation date: 2024-06-27T18:26:11.107367
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/AS1T03_140T01_9000003142_21307cztM0_level2.evt modeM0/AS1T03_140T01_9000003142_21307cztM0_level2_quad_clean.evt
Size (bytes)486,904,320101,977,920
Size464.3 MB 97.3 MB
Events in quadrant A3,238,553688,280
Events in quadrant B3,320,333687,957
Events in quadrant C3,161,474652,685
Events in quadrant D4,611,166633,056

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134791
B0136951
C0131421
D0181253

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6110721.178396%
B6111811.325479%
C6111951.554574%
D61101822.978723%

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 7465 6110 5 5 0.07% 0.08%
B 7466 6112 14 14 0.19% 0.23%
C 7466 6112 5 5 0.07% 0.08%
D 7465 6110 109 109 1.46% 1.78%

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 15 174 47384 291.28 810 798 159.9
A 15 236 43694 268.21 810 798 159.9
A 9 143 10467 60.46 810 798 159.9
B 0 189 49403 323.69 799 782 150.2
B 0 190 45132 295.26 799 782 150.2
B 0 230 44151 288.73 799 782 150.2
C 14 238 120961 687.04 755 762 175.0
C 3 233 63835 360.51 755 762 175.0
C 10 23 17545 95.93 755 762 175.0
D 13 174 614066 3328.52 769 748 184.3
D 12 235 442140 2395.46 769 748 184.3
D 1 52 300462 1626.57 769 748 184.3

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