ASTROSAT CZTI

Data Quality Report

Orbit 22351

Creation date: 2024-06-27T18:40:27.394900
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/AS1C05_004T01_9000003308_22351cztM0_level2.evt modeM0/AS1C05_004T01_9000003308_22351cztM0_level2_quad_clean.evt
Size (bytes)437,425,92092,511,360
Size417.2 MB 88.2 MB
Events in quadrant A3,144,674592,425
Events in quadrant B3,302,057606,935
Events in quadrant C3,183,497575,224
Events in quadrant D3,163,299561,674

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136452
B0139642
C0137032
D0140422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6672350.524580%
B6672671.004197%
C6672801.199041%
D6672230.344724%

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 7702 6673 0 0 0.00% 0.00%
B 7702 6673 1 1 0.01% 0.01%
C 7702 6673 0 0 0.00% 0.00%
D 7702 6673 8 8 0.10% 0.12%

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 3 1 11576 66.4 811 794 162.4
A 13 254 9684 54.74 811 794 162.4
A 0 226 6945 37.88 811 794 162.4
B 0 245 48278 311.03 816 798 152.7
B 0 229 19055 119.6 816 798 152.7
B 12 111 18201 114.0 816 798 152.7
C 14 238 126570 691.77 782 786 181.8
C 0 10 8880 44.51 782 786 181.8
C 13 61 5457 25.69 782 786 181.8
D 1 52 79464 418.92 785 763 187.9
D 12 227 60155 316.14 785 763 187.9
D 2 153 27647 143.1 785 763 187.9

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