ASTROSAT CZTI

Data Quality Report

Orbit 08744

Creation date: 2024-06-27T15:36:37.919579
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/AS1G07_013T02_9000001216_08744cztM0_level2.evt modeM0/AS1G07_013T02_9000001216_08744cztM0_level2_quad_clean.evt
Size (bytes)419,391,360103,112,640
Size400.0 MB 98.3 MB
Events in quadrant A3,005,456662,036
Events in quadrant B3,080,519679,651
Events in quadrant C3,060,375674,367
Events in quadrant D3,107,135647,751

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135903
B0137552
C0137082
D0140272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6582270.410210%
B6582290.440596%
C6582280.425403%
D6582260.395017%

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 7682 6583 7 7 0.09% 0.11%
B 7682 6583 1 1 0.01% 0.02%
C 7682 6583 17 17 0.22% 0.26%
D 7682 6583 13 13 0.17% 0.20%

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 75146 493.87 747 730 150.7
A 15 174 31684 205.43 747 730 150.7
A 13 14 9069 55.34 747 730 150.7
B 0 214 29910 205.77 763 744 141.7
B 4 48 27044 185.55 763 744 141.7
B 4 80 20843 141.8 763 744 141.7
C 1 16 120501 698.07 745 747 171.5
C 8 128 10233 55.3 745 747 171.5
C 14 234 9046 48.38 745 747 171.5
D 2 152 93582 468.49 731 713 198.2
D 7 71 75890 379.24 731 713 198.2
D 1 52 64105 319.79 731 713 198.2

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