ASTROSAT CZTI

Data Quality Report

Orbit 42125

Creation date: 2024-06-27T22:37:14.649376
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/AS1A12_061T07_9000005752_42125cztM0_level2.fits modeM0/AS1A12_061T07_9000005752_42125cztM0_level2_quad_clean.evt
Size (bytes)332,328,96091,434,240
Size316.9 MB 87.2 MB
Events in quadrant A2,857,229629,822
Events in quadrant B2,462,449648,667
Events in quadrant C2,482,698605,512
Events in quadrant D4,099,993525,859

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114552
B0105672
C0103232
D0156102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5125160.312195%
B5125120.234146%
C512570.136585%
D51253867.531707%

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 7097 5126 3 3 0.04% 0.06%
B 7097 5126 5 5 0.07% 0.10%
C 7097 5126 0 0 0.00% 0.00%
D 7097 5126 359 359 5.06% 7.00%

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 516019 4221.54 599 588 122.1
A 13 6 22557 179.93 599 588 122.1
A 3 137 6609 49.31 599 588 122.1
B 5 255 72570 634.72 596 581 113.4
B 0 183 21473 184.2 596 581 113.4
B 0 229 20509 175.7 596 581 113.4
C 15 214 215374 1592.83 581 584 134.8
C 13 61 3903 24.61 581 584 134.8
C 15 159 2080 11.09 581 584 134.8
D 13 249 1051105 7777.73 558 542 135.1
D 1 52 591539 4375.39 558 542 135.1
D 12 6 203797 1504.78 558 542 135.1

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