ASTROSAT CZTI

Data Quality Report

Orbit 34976

Creation date: 2022-03-19T16:12:39.531423
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/AS1A10_123T09_9000005012_34976cztM0_level2.evt modeM0/AS1A10_123T09_9000005012_34976cztM0_level2_quad_clean.evt
Size (bytes)469,984,32069,658,560
Size448.2 MB 66.4 MB
Events in quadrant A2,529,935435,125
Events in quadrant B2,917,441443,802
Events in quadrant C2,893,432439,792
Events in quadrant D5,515,775401,884

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113403
B0124682
C0120832
D0204382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5550100.180180%
B55501152.072072%
C5550821.477477%
D55504948.900901%

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 9104 5552 1 1 0.01% 0.02%
B 9104 5552 80 80 0.88% 1.44%
C 9104 5552 72 72 0.79% 1.30%
D 9104 5552 423 423 4.65% 7.62%

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 71091 567.6 620 607 124.2
A 13 6 27131 213.6 620 607 124.2
A 15 223 17707 137.7 620 607 124.2
B 5 172 384714 3281.61 616 600 117.1
B 4 232 39174 329.55 616 600 117.1
B 0 190 30584 256.16 616 600 117.1
C 0 10 253157 1815.53 603 606 139.1
C 15 214 232830 1669.4 603 606 139.1
C 14 67 39166 277.2 603 606 139.1
D 8 195 1142415 8018.24 583 566 142.4
D 2 249 439658 3083.37 583 566 142.4
D 2 250 418513 2934.89 583 566 142.4

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