ASTROSAT CZTI

Data Quality Report

Orbit 06604

Creation date: 2024-06-27T15:09:19.476547
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/AS1A02_170T02_9000000892_06604cztM0_level2.evt modeM0/AS1A02_170T02_9000000892_06604cztM0_level2_quad_clean.evt
Size (bytes)526,034,88095,981,760
Size501.7 MB 91.5 MB
Events in quadrant A3,211,319607,881
Events in quadrant B3,918,717610,549
Events in quadrant C3,170,834605,322
Events in quadrant D5,133,882574,221

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148802
B0166151
C0149261
D0203111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73091391.901765%
B73092954.036120%
C7309670.916678%
D73091672.284854%

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 7499 7311 2 2 0.03% 0.03%
B 7499 7311 65 65 0.87% 0.89%
C 7499 7311 1 1 0.01% 0.01%
D 7499 7311 89 89 1.19% 1.22%

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 8 15 19990 114.53 826 806 167.5
A 15 174 9682 52.99 826 806 167.5
A 0 226 8011 43.02 826 806 167.5
B 3 220 283350 1805.71 827 806 156.5
B 0 219 191377 1217.92 827 806 156.5
B 4 48 96490 611.5 827 806 156.5
C 9 247 19318 99.67 805 808 185.7
C 13 61 6204 29.06 805 808 185.7
C 9 54 5896 27.4 805 808 185.7
D 8 195 1287773 6498.14 799 771 198.1
D 13 105 425988 2146.94 799 771 198.1
D 2 152 141755 711.83 799 771 198.1

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