ASTROSAT CZTI

Data Quality Report

Orbit 26580

Creation date: 2024-06-27T19:30:41.639925
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_095T02_9000003846_26580cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26580cztM0_level2_quad_clean.evt
Size (bytes)595,742,400117,380,160
Size568.1 MB 111.9 MB
Events in quadrant A3,716,970778,875
Events in quadrant B3,963,048789,562
Events in quadrant C4,362,995753,270
Events in quadrant D5,495,066715,693

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159690
B0165620
C0177210
D0213330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74381091.465448%
B74391401.881973%
C74392603.495093%
D74394285.753461%

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 8403 7439 19 19 0.23% 0.26%
B 8404 7440 15 15 0.18% 0.20%
C 8404 7440 79 79 0.94% 1.06%
D 8404 7441 205 205 2.44% 2.76%

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 0 13 262582 1455.35 893 874 179.8
A 13 254 11803 60.78 893 874 179.8
A 3 137 8446 42.11 893 874 179.8
B 0 189 250089 1497.45 889 868 166.4
B 5 172 75658 449.38 889 868 166.4
B 3 112 70528 418.55 889 868 166.4
C 4 254 623187 3162.01 851 854 196.8
C 3 233 240438 1217.3 851 854 196.8
C 14 238 136461 689.0 851 854 196.8
D 1 52 1463642 7141.02 843 817 204.8
D 2 250 506212 2467.17 843 817 204.8
D 7 80 271030 1319.09 843 817 204.8

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