ASTROSAT CZTI

Data Quality Report

Orbit 36951

Creation date: 2024-06-27T21:33:29.798936
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/AS1A11_024T01_9000005250_36951cztM0_level2.evt modeM0/AS1A11_024T01_9000005250_36951cztM0_level2_quad_clean.evt
Size (bytes)414,573,12088,056,000
Size395.4 MB 84.0 MB
Events in quadrant A2,796,824575,474
Events in quadrant B3,261,234577,294
Events in quadrant C2,860,100579,240
Events in quadrant D3,259,917546,272

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118593
B0131122
C0119162
D0133842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5555170.306031%
B5555791.422142%
C5555370.666067%
D5555450.810081%

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 7198 5556 5 5 0.07% 0.09%
B 7198 5556 56 56 0.78% 1.01%
C 7198 5556 14 14 0.19% 0.25%
D 7198 5556 28 28 0.39% 0.50%

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 10 83 239606 1818.08 649 636 131.4
A 15 174 31814 237.2 649 636 131.4
A 13 254 10607 75.86 649 636 131.4
B 0 229 177423 1427.97 639 623 123.8
B 5 172 137761 1107.63 639 623 123.8
B 0 190 121490 976.22 639 623 123.8
C 15 214 241644 1653.45 626 631 145.8
C 0 10 131511 897.89 626 631 145.8
C 14 254 42559 287.64 626 631 145.8
D 2 153 145680 945.21 627 609 153.5
D 2 250 144141 935.19 627 609 153.5
D 2 249 120941 784.03 627 609 153.5

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