ASTROSAT CZTI

Data Quality Report

Orbit 33971

Creation date: 2024-06-27T20:54:47.485045
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/AS1A11_037T01_9000004858_33971cztM0_level2.evt modeM0/AS1A11_037T01_9000004858_33971cztM0_level2_quad_clean.evt
Size (bytes)664,542,72073,532,160
Size633.8 MB 70.1 MB
Events in quadrant A3,457,344479,748
Events in quadrant B3,473,321524,125
Events in quadrant C2,893,028517,172
Events in quadrant D9,952,797342,923

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134912
B0136161
C0115741
D0331501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51604859.399225%
B5160931.802326%
C5160310.600775%
D5160301258.372093%

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 7043 5161 97 97 1.38% 1.88%
B 7043 5161 58 58 0.82% 1.12%
C 7043 5161 18 18 0.26% 0.35%
D 7043 5161 2675 2675 37.98% 51.83%

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 15 169 1062995 8726.52 611 601 121.7
A 14 238 12913 101.13 611 601 121.7
A 13 254 8604 65.74 611 601 121.7
B 5 172 428608 3604.18 636 620 118.7
B 0 182 203353 1707.26 636 620 118.7
B 0 190 161628 1355.88 636 620 118.7
C 15 214 225141 1542.22 634 640 145.6
C 0 10 107492 734.02 634 640 145.6
C 3 233 56928 386.67 634 640 145.6
D 12 33 7463814 71969.14 420 409 103.7
D 8 195 460891 4440.4 420 409 103.7
D 2 250 159196 1531.17 420 409 103.7

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