ASTROSAT CZTI

Data Quality Report

Orbit 35919

Creation date: 2022-06-09T01:41:34.606536
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_35919cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35919cztM0_level2_quad_clean.evt
Size (bytes)583,344,000103,443,840
Size556.3 MB 98.7 MB
Events in quadrant A4,465,820695,310
Events in quadrant B4,160,566679,181
Events in quadrant C3,514,085688,968
Events in quadrant D5,101,916631,659

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172893
B0162952
C0139962
D0193832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62642514.007024%
B62643766.002554%
C6264981.564496%
D62644467.120051%

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 8892 6265 175 175 1.97% 2.79%
B 8892 6266 251 251 2.82% 4.01%
C 8892 6266 72 72 0.81% 1.15%
D 8892 6266 371 371 4.17% 5.92%

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 1292627 8423.53 743 732 153.4
A 10 83 180059 1169.26 743 732 153.4
A 9 143 104839 678.81 743 732 153.4
B 5 172 1192192 8419.35 725 709 141.5
B 5 255 66100 462.07 725 709 141.5
B 0 213 23269 159.42 725 709 141.5
C 0 10 279580 1643.25 724 731 169.7
C 15 214 262512 1542.67 724 731 169.7
C 0 207 132437 776.14 724 731 169.7
D 2 250 725838 4171.76 708 693 173.8
D 12 6 414283 2379.38 708 693 173.8
D 8 195 354959 2038.09 708 693 173.8

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