ASTROSAT CZTI

Data Quality Report

Orbit 19337

Creation date: 2024-06-27T18:01:33.656324
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_204T01_9000002856_19337cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19337cztM0_level2_quad_clean.evt
Size (bytes)696,839,040114,819,840
Size664.6 MB 109.5 MB
Events in quadrant A3,561,543814,433
Events in quadrant B3,662,632811,385
Events in quadrant C4,332,119760,288
Events in quadrant D9,112,857642,074

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147882
B0151802
C0170092
D0315292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6434811.258937%
B6434991.538701%
C64332203.419866%
D6433217833.856677%

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 7749 6434 3 3 0.04% 0.05%
B 7749 6434 4 4 0.05% 0.06%
C 7748 6433 12 12 0.15% 0.19%
D 7748 6433 1871 1871 24.15% 29.08%

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 5 16 35322 189.88 911 895 181.3
A 11 29 20240 106.69 911 895 181.3
A 0 226 8141 39.96 911 895 181.3
B 0 229 93202 556.02 889 869 166.1
B 0 190 32176 188.53 889 869 166.1
B 3 64 26642 155.2 889 869 166.1
C 3 233 860638 4359.61 856 862 197.2
C 14 238 135949 684.98 856 862 197.2
C 13 61 6097 26.54 856 862 197.2
D 7 238 3787441 20678.94 762 742 183.1
D 10 66 1569206 8565.29 762 742 183.1
D 1 52 703245 3836.33 762 742 183.1

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