ASTROSAT CZTI

Data Quality Report

Orbit 36012

Creation date: 2022-08-09T18:40:44.932826
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/AS1T04_069T01_9000005158_36012cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36012cztM0_level2_quad_clean.evt
Size (bytes)460,105,92063,483,840
Size438.8 MB 60.5 MB
Events in quadrant A2,603,412402,643
Events in quadrant B2,885,377403,781
Events in quadrant C2,946,906388,470
Events in quadrant D5,141,066357,751

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110073
B0119762
C0118352
D0189932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5272190.360395%
B5272841.593323%
C52721142.162367%
D52723005.690440%

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 7064 5273 5 5 0.07% 0.09%
B 7064 5273 49 49 0.69% 0.93%
C 7064 5273 99 99 1.40% 1.88%
D 7064 5273 299 299 4.23% 5.67%

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 163357 1291.15 620 607 126.1
A 7 191 27180 210.81 620 607 126.1
A 13 6 10176 75.91 620 607 126.1
B 5 172 151829 1284.59 617 600 117.7
B 0 190 73543 619.6 617 600 117.7
B 4 171 66161 556.9 617 600 117.7
C 9 187 258156 1833.2 601 606 140.5
C 15 214 221362 1571.31 601 606 140.5
C 0 10 126309 894.74 601 606 140.5
D 12 227 2292452 15759.36 588 571 145.4
D 12 235 284756 1954.1 588 571 145.4
D 12 6 106747 730.08 588 571 145.4

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