ASTROSAT CZTI

Data Quality Report

Orbit 36223

Creation date: 2022-06-10T19:54:54.744948
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_36223cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36223cztM0_level2_quad_clean.evt
Size (bytes)619,804,80079,548,480
Size591.1 MB 75.9 MB
Events in quadrant A3,915,245517,880
Events in quadrant B4,395,261509,247
Events in quadrant C3,133,904521,886
Events in quadrant D6,926,881446,257

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154153
B0167892
C0127462
D0245852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5903530.897849%
B59034587.758767%
C5903410.694562%
D5903108618.397425%

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 7216 5904 27 27 0.37% 0.46%
B 7216 5904 319 319 4.42% 5.40%
C 7216 5904 34 34 0.47% 0.58%
D 7216 5904 1034 1034 14.33% 17.51%

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 984525 7145.8 681 665 137.7
A 10 83 199655 1445.27 681 665 137.7
A 9 143 60199 432.39 681 665 137.7
B 5 236 754290 5883.59 660 644 128.1
B 5 172 750262 5852.15 660 644 128.1
B 0 213 141753 1101.62 660 644 128.1
C 15 214 252159 1610.58 663 666 156.2
C 0 207 168331 1073.74 663 666 156.2
C 0 10 122037 777.27 663 666 156.2
D 12 227 2811720 18428.01 624 606 152.5
D 12 6 613052 4014.84 624 606 152.5
D 12 235 415830 2721.96 624 606 152.5

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