ASTROSAT CZTI

Data Quality Report

Orbit 24612

Creation date: 2024-06-27T19:07:54.738631
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_24612cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24612cztM0_level2_quad_clean.evt
Size (bytes)677,839,680123,819,840
Size646.4 MB 118.1 MB
Events in quadrant A3,998,132817,463
Events in quadrant B5,569,138788,372
Events in quadrant C5,851,193781,771
Events in quadrant D4,547,106784,669

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174542
B0222222
C0230672
D0189772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8313770.926260%
B83146587.914361%
C83143584.305990%
D8314951.142651%

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 8803 8319 0 0 0.00% 0.00%
B 8804 8320 366 366 4.16% 4.40%
C 8804 8320 2 2 0.02% 0.02%
D 8804 8320 29 29 0.33% 0.35%

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 13 254 13433 59.49 1034 1012 208.8
A 3 137 9853 42.35 1034 1012 208.8
A 0 226 8826 37.43 1034 1012 208.8
B 3 64 1657495 8602.92 993 965 192.6
B 12 111 24065 119.96 993 965 192.6
B 11 111 21535 106.82 993 965 192.6
C 7 247 1785325 7606.63 993 999 234.6
C 14 238 154171 652.98 993 999 234.6
C 3 233 12714 49.94 993 999 234.6
D 1 52 266135 1074.74 1012 982 246.7
D 8 195 215447 869.28 1012 982 246.7
D 7 238 194796 785.58 1012 982 246.7

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