ASTROSAT CZTI

Data Quality Report

Orbit 34843

Creation date: 2022-03-09T09:10:50.184196
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/AS1C07_005T01_9000004992_34843cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34843cztM0_level2_quad_clean.evt
Size (bytes)752,558,40083,056,320
Size717.7 MB 79.2 MB
Events in quadrant A12,056,068288,637
Events in quadrant B3,801,248633,069
Events in quadrant C3,158,284631,379
Events in quadrant D3,420,531592,505

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0393673
B0146141
C0121901
D0139721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5251498995.010474%
B52512514.780042%
C52511322.513807%
D5251561.066464%

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 7374 5250 4647 4647 63.02% 88.51%
B 7375 5253 165 165 2.24% 3.14%
C 7375 5253 99 99 1.34% 1.88%
D 7375 5253 50 50 0.68% 0.95%

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 10759428 163218.38 327 321 65.9
A 10 83 20155 300.89 327 321 65.9
A 13 254 5212 74.2 327 321 65.9
B 5 172 571512 4774.03 643 628 119.6
B 5 255 238574 1989.83 643 628 119.6
B 0 190 205827 1715.98 643 628 119.6
C 0 10 314142 2161.74 638 643 145.0
C 15 214 238503 1640.17 638 643 145.0
C 0 207 41732 283.33 638 643 145.0
D 8 195 579106 3765.02 641 625 153.6
D 1 52 86852 561.21 641 625 153.6
D 12 6 60030 386.64 641 625 153.6

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