ASTROSAT CZTI

Data Quality Report

Orbit 41167

Creation date: 2024-06-27T22:25:26.007796
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_101T04_9000005610_41167cztM0_level2.fits modeM0/AS1A12_101T04_9000005610_41167cztM0_level2_quad_clean.evt
Size (bytes)471,101,76080,988,480
Size449.3 MB 77.2 MB
Events in quadrant A2,800,564601,632
Events in quadrant B3,284,803582,741
Events in quadrant C7,906,267359,554
Events in quadrant D3,028,568531,986

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116413
B0135582
C0271292
D0127602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A537380.148893%
B53733316.160432%
C5373219040.759352%
D5373420.781686%

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 7105 5374 2 2 0.03% 0.04%
B 7105 5374 248 248 3.49% 4.61%
C 7105 5373 1811 1811 25.49% 33.71%
D 7105 5374 35 35 0.49% 0.65%

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 514383 4286.58 584 572 119.9
A 12 189 23996 195.42 584 572 119.9
A 13 254 9748 76.55 584 572 119.9
B 0 245 926834 8385.35 562 546 110.5
B 7 202 139866 1261.21 562 546 110.5
B 5 255 13912 120.99 562 546 110.5
C 9 54 5449474 49990.36 468 470 109.0
C 0 10 363392 3329.53 468 470 109.0
C 15 214 195712 1791.19 468 470 109.0
D 2 16 465955 3401.36 561 545 136.8
D 13 249 153713 1119.4 561 545 136.8
D 2 120 127091 924.84 561 545 136.8

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