ASTROSAT CZTI

Data Quality Report

Orbit 19908

Creation date: 2024-06-27T18:08:38.228083
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_064T01_9000002964_19908cztM0_level2.evt modeM0/AS1A05_064T01_9000002964_19908cztM0_level2_quad_clean.evt
Size (bytes)563,895,360105,220,800
Size537.8 MB 100.3 MB
Events in quadrant A3,180,846683,283
Events in quadrant B3,506,434693,582
Events in quadrant C3,802,381675,152
Events in quadrant D6,102,850636,074

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145001
B0152251
C0159911
D0229721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71551261.761006%
B71551652.306080%
C71551982.767296%
D71566098.510341%

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 7460 7155 0 0 0.00% 0.00%
B 7460 7155 15 15 0.20% 0.21%
C 7460 7155 31 31 0.42% 0.43%
D 7461 7156 471 471 6.31% 6.58%

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 7629 41.06 824 804 166.2
A 0 226 7079 37.75 824 804 166.2
A 3 137 6644 35.13 824 804 166.2
B 7 220 109222 688.47 823 802 157.5
B 0 189 56492 353.63 823 802 157.5
B 0 197 34384 213.25 823 802 157.5
C 9 221 455954 2419.56 795 800 188.1
C 14 238 123870 654.23 795 800 188.1
C 0 207 112882 595.82 795 800 188.1
D 2 184 2434380 12606.03 784 759 193.1
D 7 238 279776 1445.29 784 759 193.1
D 7 96 148330 764.41 784 759 193.1

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