ASTROSAT CZTI

Data Quality Report

Orbit 25427

Creation date: 2024-06-27T19:17:31.981852
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/AS1A09_047T01_9000003714_25427cztM0_level2.evt modeM0/AS1A09_047T01_9000003714_25427cztM0_level2_quad_clean.evt
Size (bytes)626,731,20072,947,520
Size597.7 MB 69.6 MB
Events in quadrant A4,417,329455,946
Events in quadrant B3,476,307463,460
Events in quadrant C3,545,114444,809
Events in quadrant D7,072,175360,648

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178030
B0145190
C0147500
D0257120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6942721.037165%
B6943711.022613%
C6943941.353882%
D6943110315.886504%

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 8727 6942 0 0 0.00% 0.00%
B 8728 6943 0 0 0.00% 0.00%
C 8728 6943 1 1 0.01% 0.01%
D 8728 6943 1052 1052 12.05% 15.15%

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 6 16 1076805 6223.15 865 846 172.9
A 13 254 10445 55.52 865 846 172.9
A 3 137 7922 40.93 865 846 172.9
B 0 229 35033 206.05 861 839 165.9
B 0 190 30409 178.19 861 839 165.9
B 12 111 20372 117.71 861 839 165.9
C 7 247 173002 891.86 825 829 193.0
C 14 238 132864 683.94 825 829 193.0
C 2 16 23135 115.55 825 829 193.0
D 1 52 2890993 15487.4 772 748 186.6
D 8 195 861117 4610.29 772 748 186.6
D 7 238 347376 1857.41 772 748 186.6

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