ASTROSAT CZTI

Data Quality Report

Orbit 24824

Creation date: 2024-06-27T19:10:16.762375
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/AS1A07_045T01_9000003628_24824cztM0_level2.evt modeM0/AS1A07_045T01_9000003628_24824cztM0_level2_quad_clean.evt
Size (bytes)506,476,80067,671,360
Size483.0 MB 64.5 MB
Events in quadrant A3,375,415418,859
Events in quadrant B4,445,217424,909
Events in quadrant C3,358,030396,168
Events in quadrant D3,746,603383,067

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134582
B0172262
C0134192
D0150592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6100540.885246%
B61003716.081967%
C6100831.360656%
D6100530.868852%

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 7435 6101 0 0 0.00% 0.00%
B 7435 6101 239 239 3.21% 3.92%
C 7435 6101 0 0 0.00% 0.00%
D 7435 6101 8 8 0.11% 0.13%

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 8854 46.21 876 860 173.0
A 0 226 7568 38.78 876 860 173.0
A 3 137 7378 37.68 876 860 173.0
B 3 64 1078582 6734.17 854 838 160.0
B 12 111 19005 113.51 854 838 160.0
B 11 111 16963 100.76 854 838 160.0
C 14 238 133863 707.72 818 825 188.0
C 7 247 32858 170.41 818 825 188.0
C 13 61 5474 24.73 818 825 188.0
D 8 195 513086 2562.64 825 803 199.9
D 9 35 63663 314.45 825 803 199.9
D 1 52 62665 309.46 825 803 199.9

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