ASTROSAT CZTI

Data Quality Report

Orbit 11270

Creation date: 2024-06-27T16:10:41.934880
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/AS1A04_080T02_9000001646_11270cztM0_level2.evt modeM0/AS1A04_080T02_9000001646_11270cztM0_level2_quad_clean.evt
Size (bytes)524,718,72068,595,840
Size500.4 MB 65.4 MB
Events in quadrant A3,883,766417,810
Events in quadrant B5,157,638398,549
Events in quadrant C2,798,154427,438
Events in quadrant D3,638,005407,379

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154951
B0193271
C0127051
D0148921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60932974.874446%
B609386614.213031%
C60931262.067947%
D60932423.971771%

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 6308 6093 91 91 1.44% 1.49%
B 6308 6094 492 492 7.80% 8.07%
C 6308 6094 3 3 0.05% 0.05%
D 6308 6094 74 74 1.17% 1.21%

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 13 251 435729 2920.54 718 701 149.0
A 8 5 286084 1915.91 718 701 149.0
A 14 238 274889 1840.75 718 701 149.0
B 3 64 1247107 9018.22 699 679 138.2
B 4 239 1057038 7643.02 699 679 138.2
B 0 230 29859 211.12 699 679 138.2
C 7 238 10062 55.41 710 713 168.7
C 5 128 9703 53.28 710 713 168.7
C 13 61 5193 26.55 710 713 168.7
D 13 249 224984 1323.81 698 678 169.4
D 8 195 178686 1050.57 698 678 169.4
D 1 52 160363 942.43 698 678 169.4

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