ASTROSAT CZTI

Data Quality Report

Orbit 20596

Creation date: 2024-06-27T18:17:13.403379
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/AS1A06_003T04_9000003046_20596cztM0_level2.evt modeM0/AS1A06_003T04_9000003046_20596cztM0_level2_quad_clean.evt
Size (bytes)571,726,08063,135,360
Size545.2 MB 60.2 MB
Events in quadrant A3,405,697376,890
Events in quadrant B4,046,005379,154
Events in quadrant C3,545,566364,071
Events in quadrant D5,893,894354,801

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141511
B0161811
C0144601
D0218881

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6250771.232000%
B62511832.927532%
C62511292.063670%
D625175412.062070%

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 7535 6251 0 0 0.00% 0.00%
B 7536 6252 42 42 0.56% 0.67%
C 7536 6252 12 12 0.16% 0.19%
D 7536 6252 603 603 8.00% 9.64%

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 16 37609 213.32 872 858 172.3
A 12 194 12545 67.84 872 858 172.3
A 0 226 7719 39.83 872 858 172.3
B 7 220 364408 2286.75 859 841 159.0
B 0 189 109645 684.35 859 841 159.0
B 0 197 96671 602.75 859 841 159.0
C 14 238 132255 690.97 830 838 190.2
C 8 208 93719 488.36 830 838 190.2
C 0 207 58074 300.94 830 838 190.2
D 5 222 1180359 5997.85 814 792 196.7
D 1 20 1054085 5355.77 814 792 196.7
D 7 38 218442 1106.7 814 792 196.7

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