ASTROSAT CZTI

Data Quality Report

Orbit 36222

Creation date: 2022-06-10T13:16:04.876009
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_080T02_9000005176_36222cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36222cztM0_level2_quad_clean.evt
Size (bytes)560,145,60074,543,040
Size534.2 MB 71.1 MB
Events in quadrant A3,971,720469,909
Events in quadrant B4,050,586473,266
Events in quadrant C3,260,162473,826
Events in quadrant D5,279,662425,028

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155883
B0158002
C0131792
D0196832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5941631.060428%
B59412674.494193%
C5941590.993099%
D59415729.628009%

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 8956 5943 40 40 0.45% 0.67%
B 8956 5943 166 166 1.85% 2.79%
C 8956 5943 50 50 0.56% 0.84%
D 8956 5943 538 538 6.01% 9.05%

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 15 223 1070467 7701.12 683 669 138.9
A 10 83 197851 1419.45 683 669 138.9
A 9 143 41817 296.21 683 669 138.9
B 5 172 563909 4385.5 673 653 128.4
B 5 236 438101 3405.96 673 653 128.4
B 0 213 187627 1455.77 673 653 128.4
C 0 207 316850 2020.91 668 670 156.5
C 15 214 250601 1597.47 668 670 156.5
C 0 10 75277 476.86 668 670 156.5
D 12 227 1373064 8599.98 643 623 159.6
D 12 235 417543 2612.5 643 623 159.6
D 12 6 364470 2279.94 643 623 159.6

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