ASTROSAT CZTI

Data Quality Report

Orbit 44182

Creation date: 2024-06-27T23:00:16.120318
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/AS1A13_074T12_9000005960_44182cztM0_level2.fits modeM0/AS1A13_074T12_9000005960_44182cztM0_level2_quad_clean.evt
Size (bytes)389,952,00065,784,960
Size371.9 MB 62.7 MB
Events in quadrant A3,176,979468,892
Events in quadrant B2,887,463479,612
Events in quadrant C2,083,161458,551
Events in quadrant D5,968,360296,109

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127881
B0114111
C090741
D0205841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40951633.980464%
B40952245.470085%
C4095591.440781%
D4095139934.163614%

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 5225 4096 42 42 0.80% 1.03%
B 5225 4096 108 108 2.07% 2.64%
C 5225 4096 18 18 0.34% 0.44%
D 5225 4096 1173 1173 22.45% 28.64%

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 956036 9497.19 479 469 100.6
A 15 223 324451 3219.99 479 469 100.6
A 7 3 25899 252.74 479 469 100.6
B 5 235 408826 4353.83 476 463 93.8
B 0 219 195566 2080.12 476 463 93.8
B 0 189 121254 1287.83 476 463 93.8
C 14 254 122850 1109.91 467 471 110.3
C 9 54 42273 379.12 467 471 110.3
C 15 208 40473 362.8 467 471 110.3
D 1 52 2716700 26516.73 389 375 102.4
D 13 249 557572 5439.35 389 375 102.4
D 1 47 489113 4771.05 389 375 102.4

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