ASTROSAT CZTI

Data Quality Report

Orbit 32800

Creation date: 2024-06-27T20:42:09.976620
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/AS1T04_064T01_9000004730_32800cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32800cztM0_level2_quad_clean.evt
Size (bytes)564,929,28054,881,280
Size538.8 MB 52.3 MB
Events in quadrant A3,756,696300,811
Events in quadrant B3,749,942349,866
Events in quadrant C2,988,027357,568
Events in quadrant D6,276,398302,094

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139932
B0144061
C0119161
D0221941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A500554410.869131%
B50052555.094905%
C5005400.799201%
D500561412.267732%

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 7038 5006 311 311 4.42% 6.21%
B 7038 5006 143 143 2.03% 2.86%
C 7038 5006 27 27 0.38% 0.54%
D 7038 5006 525 525 7.46% 10.49%

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 15 237 1162720 9087.11 641 632 127.9
A 14 238 48314 372.86 641 632 127.9
A 14 63 17760 133.93 641 632 127.9
B 5 172 619936 4943.22 677 663 125.3
B 0 219 327834 2611.58 677 663 125.3
B 0 189 62235 491.49 677 663 125.3
C 3 233 196539 1310.99 659 666 149.4
C 0 10 161579 1077.0 659 666 149.4
C 14 67 19410 125.45 659 666 149.4
D 8 195 2052175 13423.68 634 623 152.8
D 10 203 597512 3905.55 634 623 152.8
D 2 250 543558 3552.52 634 623 152.8

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