ASTROSAT CZTI

Data Quality Report

Orbit 11522

Creation date: 2024-06-27T16:14:11.739457
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_022T05_9000001690_11522cztM0_level2.evt modeM0/AS1A04_022T05_9000001690_11522cztM0_level2_quad_clean.evt
Size (bytes)392,296,32062,395,200
Size374.1 MB 59.5 MB
Events in quadrant A3,985,895385,286
Events in quadrant B2,900,978402,129
Events in quadrant C1,927,499426,046
Events in quadrant D2,799,029398,285

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146202
B0112311
C082481
D0109581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A393262515.895219%
B39323408.646999%
C3932832.110885%
D39321684.272635%

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 5148 3933 344 344 6.68% 8.75%
B 5148 3934 128 128 2.49% 3.25%
C 5148 3934 0 0 0.00% 0.00%
D 5148 3934 82 82 1.59% 2.08%

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 8 5 2045555 21118.23 475 465 96.8
A 1 162 31474 320.21 475 465 96.8
A 9 143 19761 199.26 475 465 96.8
B 4 239 695031 7448.07 488 476 93.3
B 3 64 129579 1384.44 488 476 93.3
B 11 51 66414 707.09 488 476 93.3
C 7 87 6777 54.57 492 494 115.1
C 13 61 3646 27.38 492 494 115.1
C 3 202 1254 6.6 492 494 115.1
D 6 219 429197 3655.47 490 476 117.3
D 5 222 147271 1251.64 490 476 117.3
D 13 152 103426 877.8 490 476 117.3

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