ASTROSAT CZTI

Data Quality Report

Orbit 35889

Creation date: 2022-06-08T22:24:15.123071
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_080T01_9000005146_35889cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35889cztM0_level2_quad_clean.evt
Size (bytes)546,845,760106,709,760
Size521.5 MB 101.8 MB
Events in quadrant A3,111,389723,899
Events in quadrant B5,024,021691,275
Events in quadrant C3,471,538708,898
Events in quadrant D4,532,866673,732

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129403
B0190012
C0137872
D0175952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6211130.209306%
B621165310.513605%
C62111211.948156%
D62111802.898084%

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 9227 6213 0 0 0.00% 0.00%
B 9227 6213 502 502 5.44% 8.08%
C 9227 6213 99 99 1.07% 1.59%
D 9227 6213 151 151 1.64% 2.43%

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 176624 1125.35 755 741 156.3
A 13 254 11302 67.57 755 741 156.3
A 13 6 9785 57.87 755 741 156.3
B 5 63 1476378 10663.47 717 701 138.4
B 5 172 516122 3724.51 717 701 138.4
B 5 255 113823 817.44 717 701 138.4
C 15 214 259386 1520.41 726 734 170.1
C 15 208 207154 1213.38 726 734 170.1
C 0 10 118319 691.19 726 734 170.1
D 12 227 792093 4407.62 724 707 179.5
D 8 195 456709 2539.7 724 707 179.5
D 13 249 207913 1154.03 724 707 179.5

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