ASTROSAT CZTI

Data Quality Report

Orbit 30789

Creation date: 2024-06-27T20:19:38.592972
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/AS1A10_071T18_9000004448_30789cztM0_level2.evt modeM0/AS1A10_071T18_9000004448_30789cztM0_level2_quad_clean.evt
Size (bytes)655,580,16067,896,000
Size625.2 MB 64.8 MB
Events in quadrant A3,524,494422,382
Events in quadrant B5,286,035422,063
Events in quadrant C4,651,311390,265
Events in quadrant D5,963,042376,604

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140222
B0196432
C0184795
D0218032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6372731.145637%
B63721332.087257%
C63712984.677445%
D63712664.175169%

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 7682 6372 0 0 0.00% 0.00%
B 7682 6372 1 1 0.01% 0.02%
C 7681 6371 101 101 1.31% 1.59%
D 7681 6371 188 188 2.45% 2.95%

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 11242 57.29 914 900 180.5
A 3 137 8456 41.86 914 900 180.5
A 0 226 7775 38.08 914 900 180.5
B 6 159 1692307 10029.77 901 881 168.6
B 0 190 42696 247.95 901 881 168.6
B 12 111 20128 114.13 901 881 168.6
C 3 233 839241 4290.32 839 848 195.4
C 0 10 385096 1966.32 839 848 195.4
C 14 238 138714 705.5 839 848 195.4
D 8 195 2694275 12456.93 846 831 216.2
D 2 250 26956 120.83 846 831 216.2
D 2 234 23775 106.11 846 831 216.2

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