ASTROSAT CZTI

Data Quality Report

Orbit 04648

Creation date: 2024-06-27T14:45:04.380592
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/AS1G05_218T03_9000000582_04648cztM0_level2.evt modeM0/AS1G05_218T03_9000000582_04648cztM0_level2_quad_clean.evt
Size (bytes)437,797,44079,770,240
Size417.5 MB 76.1 MB
Events in quadrant A2,938,029501,525
Events in quadrant B3,049,320510,039
Events in quadrant C2,865,972490,283
Events in quadrant D3,957,897454,864

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135383
B0136032
C0134872
D0164422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6577420.638589%
B6577620.942679%
C6577260.395317%
D65772824.287669%

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 7592 6578 0 0 0.00% 0.00%
B 7592 6578 0 0 0.00% 0.00%
C 7592 6578 2 2 0.03% 0.03%
D 7592 6578 160 160 2.11% 2.43%

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 14 111 15328 94.33 757 742 154.6
A 0 226 7496 43.68 757 742 154.6
A 12 194 7383 42.95 757 742 154.6
B 15 204 27610 181.76 768 753 147.8
B 5 6 17969 116.52 768 753 147.8
B 12 111 13583 86.83 768 753 147.8
C 9 247 8803 47.82 731 735 168.7
C 13 61 5964 31.0 731 735 168.7
C 14 15 2727 11.81 731 735 168.7
D 8 112 561660 3267.91 705 684 171.7
D 12 110 518306 3015.36 705 684 171.7
D 2 136 45993 263.94 705 684 171.7

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