ASTROSAT CZTI

Data Quality Report

Orbit 15419

Creation date: 2024-06-27T17:08:16.787656
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/AS1T02_076T01_9000002274_15419cztM0_level2.evt modeM0/AS1T02_076T01_9000002274_15419cztM0_level2_quad_clean.evt
Size (bytes)627,099,840107,156,160
Size598.0 MB 102.2 MB
Events in quadrant A4,248,153689,595
Events in quadrant B3,740,575704,251
Events in quadrant C3,783,000695,608
Events in quadrant D6,722,550643,773

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175033
B0158992
C0157162
D0252182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73512313.142430%
B7351831.129098%
C7351330.448919%
D73513624.924500%

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 7697 7353 171 171 2.22% 2.33%
B 7697 7353 27 27 0.35% 0.37%
C 7697 7353 3 3 0.04% 0.04%
D 7697 7353 296 296 3.85% 4.03%

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 14 238 605972 3463.01 856 839 174.7
A 14 237 220835 1258.98 856 839 174.7
A 13 248 76222 431.4 856 839 174.7
B 10 245 154692 931.58 862 840 165.2
B 0 219 35145 207.71 862 840 165.2
B 0 189 32926 194.28 862 840 165.2
C 3 233 529402 2769.7 828 833 190.8
C 10 22 9114 43.39 828 833 190.8
C 7 247 8804 41.77 828 833 190.8
D 13 122 2602537 12776.75 819 792 203.6
D 1 20 545698 2675.95 819 792 203.6
D 5 222 177701 868.77 819 792 203.6

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