ASTROSAT CZTI

Data Quality Report

Orbit 28223

Creation date: 2024-06-27T19:49:20.936439
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/AS1C05_019T04_9000004074_28223cztM0_level2.evt modeM0/AS1C05_019T04_9000004074_28223cztM0_level2_quad_clean.evt
Size (bytes)312,243,84051,963,840
Size297.8 MB 49.6 MB
Events in quadrant A1,751,022338,490
Events in quadrant B2,049,095343,855
Events in quadrant C1,814,368332,081
Events in quadrant D3,600,707308,108

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074780
B083800
C077320
D0131440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3533300.849137%
B3533381.075573%
C3533551.556751%
D35322547.191393%

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 4673 3534 2 2 0.04% 0.06%
B 4673 3534 13 13 0.28% 0.37%
C 4673 3533 0 0 0.00% 0.00%
D 4672 3533 175 175 3.75% 4.95%

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 8 192 7124 73.65 450 442 90.7
A 13 254 5688 57.82 450 442 90.7
A 3 137 4311 42.64 450 442 90.7
B 10 245 266395 3078.1 447 435 86.4
B 12 111 10326 114.47 447 435 86.4
B 4 200 9666 106.83 447 435 86.4
C 14 238 70722 695.62 433 435 101.0
C 3 233 25148 244.58 433 435 101.0
C 1 16 25064 243.75 433 435 101.0
D 1 52 1370144 13585.48 426 414 100.8
D 2 250 370477 3670.42 426 414 100.8
D 8 195 64064 631.3 426 414 100.8

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