ASTROSAT CZTI

Data Quality Report

Orbit 36010

Creation date: 2022-08-09T18:17:32.043910
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_36010cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36010cztM0_level2_quad_clean.evt
Size (bytes)486,964,80066,251,520
Size464.4 MB 63.2 MB
Events in quadrant A2,622,330422,892
Events in quadrant B2,816,371421,793
Events in quadrant C2,820,522408,228
Events in quadrant D6,118,688370,862

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112993
B0118442
C0116582
D0220442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A545470.128346%
B5454360.660066%
C5454581.063440%
D54544848.874221%

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 7127 5455 0 0 0.00% 0.00%
B 7127 5455 22 22 0.31% 0.40%
C 7127 5455 37 37 0.52% 0.68%
D 7127 5455 494 494 6.93% 9.06%

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 166326 1296.32 630 617 127.8
A 13 6 8901 64.8 630 617 127.8
A 13 254 8573 62.23 630 617 127.8
B 0 213 105549 862.78 628 613 121.6
B 4 171 78146 637.47 628 613 121.6
B 5 172 58620 476.93 628 613 121.6
C 15 214 228308 1594.11 608 612 142.8
C 0 10 164991 1150.82 608 612 142.8
C 9 187 57156 395.87 608 612 142.8
D 12 227 3331402 22436.54 593 574 148.5
D 12 6 167461 1124.15 593 574 148.5
D 12 235 164355 1103.23 593 574 148.5

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