ASTROSAT CZTI

Data Quality Report

Orbit 19426

Creation date: 2024-06-27T18:02:48.222269
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/AS1A05_221T01_9000002888_19426cztM0_level2.evt modeM0/AS1A05_221T01_9000002888_19426cztM0_level2_quad_clean.evt
Size (bytes)501,232,32069,753,600
Size478.0 MB 66.5 MB
Events in quadrant A3,364,341424,778
Events in quadrant B3,488,850428,310
Events in quadrant C3,386,310413,550
Events in quadrant D4,511,071403,915

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138282
B0141482
C0137742
D0174462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63271261.991465%
B63271382.181128%
C63271282.023076%
D63271923.034614%

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 7577 6327 0 0 0.00% 0.00%
B 7577 6327 6 6 0.08% 0.09%
C 7577 6327 2 2 0.03% 0.03%
D 7577 6327 116 116 1.53% 1.83%

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 8 205 14744 79.57 867 850 174.6
A 13 254 9988 52.33 867 850 174.6
A 0 226 7701 39.23 867 850 174.6
B 0 197 42241 255.86 858 839 161.8
B 0 198 18998 112.22 858 839 161.8
B 12 111 18500 109.14 858 839 161.8
C 14 238 129474 672.37 820 826 191.3
C 0 207 39101 200.04 820 826 191.3
C 3 233 15471 76.54 820 826 191.3
D 7 238 1159755 5770.06 838 818 200.9
D 12 218 137273 679.38 838 818 200.9
D 2 234 20701 98.99 838 818 200.9

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