ASTROSAT CZTI

Data Quality Report

Orbit 12002

Creation date: 2024-06-27T16:21:08.425968
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/AS1G08_024T03_9000001774_12002cztM0_level2.evt modeM0/AS1G08_024T03_9000001774_12002cztM0_level2_quad_clean.evt
Size (bytes)614,580,480102,208,320
Size586.1 MB 97.5 MB
Events in quadrant A4,086,645652,069
Events in quadrant B5,719,720638,368
Events in quadrant C3,559,318644,036
Events in quadrant D4,711,491611,767

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176083
B0226602
C0162862
D0195032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78951121.418619%
B789587811.120963%
C7895380.481317%
D78952593.280557%

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 9496 7897 10 10 0.11% 0.13%
B 9496 7897 456 456 4.80% 5.77%
C 9496 7897 0 0 0.00% 0.00%
D 9496 7898 204 204 2.15% 2.58%

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 1 162 170085 888.18 933 913 190.5
A 1 178 92978 483.35 933 913 190.5
A 1 161 80561 418.16 933 913 190.5
B 4 239 1028642 5941.2 900 876 173.0
B 3 64 829287 4788.79 900 876 173.0
B 0 85 143859 826.54 900 876 173.0
C 7 247 12373 54.28 909 908 211.2
C 13 61 6660 27.23 909 908 211.2
C 12 4 2608 8.05 909 908 211.2
D 1 52 580860 2714.35 891 865 213.7
D 13 104 198550 925.16 891 865 213.7
D 8 195 187582 873.83 891 865 213.7

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