ASTROSAT CZTI

Data Quality Report

Orbit 45879

Creation date: 2024-06-27T23:17:14.680864
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/AS1C07_001T01_9000006136_45879cztM0_level2.fits modeM0/AS1C07_001T01_9000006136_45879cztM0_level2_quad_clean.evt
Size (bytes)453,640,320100,990,080
Size432.6 MB 96.3 MB
Events in quadrant A5,274,148671,885
Events in quadrant B5,353,469652,254
Events in quadrant C2,556,601696,075
Events in quadrant D3,138,742615,972

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199601
B0200641
C0122121
D0139391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60421051.737835%
B604267211.122145%
C604340.066192%
D60431212.002317%

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 7247 6043 32 32 0.44% 0.53%
B 7247 6043 442 442 6.10% 7.31%
C 7248 6044 0 0 0.00% 0.00%
D 7248 6044 93 93 1.28% 1.54%

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 10 83 2590081 19239.42 654 641 134.6
A 0 247 105465 778.84 654 641 134.6
A 4 0 28864 209.7 654 641 134.6
B 3 112 2619456 21296.8 637 618 123.0
B 4 171 132260 1070.53 637 618 123.0
B 0 186 20762 163.81 637 618 123.0
C 3 233 8174 49.81 651 656 150.9
C 9 237 6257 37.11 651 656 150.9
C 14 67 4809 27.52 651 656 150.9
D 13 249 307059 1915.09 636 614 160.0
D 1 52 129968 808.38 636 614 160.0
D 2 249 67838 420.11 636 614 160.0

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