ASTROSAT CZTI

Data Quality Report

Orbit 33667

Creation date: 2024-06-27T20:51:16.801248
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/AS1T04_076T01_9000004810_33667cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33667cztM0_level2_quad_clean.evt
Size (bytes)618,373,44053,343,360
Size589.7 MB 50.9 MB
Events in quadrant A6,124,928301,098
Events in quadrant B3,607,679308,338
Events in quadrant C3,563,776318,532
Events in quadrant D5,056,013297,903

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219962
B0142041
C0143671
D0190371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A556098017.625899%
B55602604.676259%
C5560931.672662%
D55601933.471223%

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 7413 5561 832 832 11.22% 14.96%
B 7413 5561 200 200 2.70% 3.60%
C 7413 5561 80 80 1.08% 1.44%
D 7413 5561 174 174 2.35% 3.13%

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 15 169 3245108 24300.84 667 655 133.5
A 15 237 278940 2084.34 667 655 133.5
A 13 6 11383 80.35 667 655 133.5
B 5 172 619215 4659.68 708 690 132.7
B 5 255 65749 490.12 708 690 132.7
B 15 85 39911 295.47 708 690 132.7
C 0 10 272899 1675.45 707 714 162.5
C 3 233 263172 1615.57 707 714 162.5
C 15 214 256740 1575.98 707 714 162.5
D 8 195 1377782 7236.35 697 685 190.3
D 2 250 224559 1176.41 697 685 190.3
D 2 249 191786 1004.2 697 685 190.3

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