ASTROSAT CZTI

Data Quality Report

Orbit 24595

Creation date: 2024-06-27T19:07:42.161085
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_189T01_9000003614_24595cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24595cztM0_level2_quad_clean.evt
Size (bytes)652,037,760104,607,360
Size621.8 MB 99.8 MB
Events in quadrant A3,425,684701,620
Events in quadrant B3,535,696709,958
Events in quadrant C6,986,404640,432
Events in quadrant D5,334,104636,825

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145412
B0148382
C0253682
D0203442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6878961.395755%
B68781291.875545%
C687884612.300087%
D687875711.006106%

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 9043 6880 1 1 0.01% 0.01%
B 9043 6880 2 2 0.02% 0.03%
C 9043 6880 375 375 4.15% 5.45%
D 9043 6880 562 562 6.21% 8.17%

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 10 255 11276 58.74 886 867 177.2
A 13 254 10423 53.93 886 867 177.2
A 3 137 7921 39.81 886 867 177.2
B 0 190 62977 370.85 881 857 167.5
B 7 202 24095 138.73 881 857 167.5
B 12 111 20417 116.77 881 857 167.5
C 7 247 3517390 18232.9 830 834 192.9
C 14 238 131046 675.13 830 834 192.9
C 2 16 58714 300.1 830 834 192.9
D 1 52 1966321 9930.45 826 804 197.9
D 8 195 171720 863.52 826 804 197.9
D 1 255 69190 345.51 826 804 197.9

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