ASTROSAT CZTI

Data Quality Report

Orbit 31629

Creation date: 2024-06-27T20:30:52.335703
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/AS1A10_123T01_9000004620_31629cztM0_level2.evt modeM0/AS1A10_123T01_9000004620_31629cztM0_level2_quad_clean.evt
Size (bytes)577,578,24066,553,920
Size550.8 MB 63.5 MB
Events in quadrant A2,952,420425,952
Events in quadrant B5,154,786421,750
Events in quadrant C3,425,514398,009
Events in quadrant D5,568,863365,125

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121161
B0191151
C0135931
D0206701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5777480.830881%
B57772243.877445%
C57781853.201800%
D57784227.303565%

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 7052 5778 4 4 0.06% 0.07%
B 7052 5778 58 58 0.82% 1.00%
C 7053 5779 8 8 0.11% 0.14%
D 7053 5779 317 317 4.49% 5.49%

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 12 96 24919 160.7 753 739 150.5
A 15 174 15433 97.66 753 739 150.5
A 13 254 11623 72.34 753 739 150.5
B 6 159 1665936 11981.02 745 729 139.0
B 10 245 230111 1650.38 745 729 139.0
B 5 172 139340 997.29 745 729 139.0
C 3 233 335100 2005.3 712 719 166.7
C 14 238 138914 828.76 712 719 166.7
C 0 10 91963 547.19 712 719 166.7
D 8 195 1487900 8830.45 699 679 168.4
D 11 176 700245 4153.71 699 679 168.4
D 12 218 194436 1150.44 699 679 168.4

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