ASTROSAT CZTI

Data Quality Report

Orbit 17625

Creation date: 2024-06-27T17:38:48.758493
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_071T01_9000002610_17625cztM0_level2.evt modeM0/AS1T03_071T01_9000002610_17625cztM0_level2_quad_clean.evt
Size (bytes)555,546,24095,840,640
Size529.8 MB 91.4 MB
Events in quadrant A3,397,228614,132
Events in quadrant B3,485,995621,256
Events in quadrant C3,620,704591,285
Events in quadrant D5,830,988572,868

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148882
B0150373
C0154852
D0224402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7215200.277200%
B7215620.859321%
C7215951.316701%
D72156488.981289%

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 9145 7217 0 0 0.00% 0.00%
B 9145 7216 1 1 0.01% 0.01%
C 9145 7217 0 0 0.00% 0.00%
D 9145 7217 412 412 4.51% 5.71%

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 14 237 39805 222.97 872 855 174.7
A 0 226 7666 38.99 872 855 174.7
A 3 137 6624 33.02 872 855 174.7
B 0 189 29366 171.48 872 850 166.3
B 12 111 20111 115.82 872 850 166.3
B 4 80 19951 114.86 872 850 166.3
C 3 233 194689 990.79 832 835 195.7
C 14 238 129219 656.17 832 835 195.7
C 0 207 44831 224.86 832 835 195.7
D 1 52 2338729 11802.33 813 789 198.1
D 13 189 235064 1182.66 813 789 198.1
D 4 239 66929 333.89 813 789 198.1

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