ASTROSAT CZTI

Data Quality Report

Orbit 00964

Creation date: 2024-06-27T14:05:24.162580
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/AS1P01_998T01_9000000188_00964cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00964cztM0_level2_quad_clean.evt
Size (bytes)3,645,662,400247,455,360
Size3.4 GB 236.0 MB
Events in quadrant A21,206,1211,732,070
Events in quadrant B22,376,8391,731,069
Events in quadrant C23,609,8081,682,966
Events in quadrant D42,041,6421,111,209

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0757420
B0791120
C0827320
D01388640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03600
D03620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17910240.134003%
B17909620.346195%
C17910130.072585%
D17910869048.520380%

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 19930 17913 392 392 1.97% 2.19%
B 19929 17912 550 550 2.76% 3.07%
C 19930 17913 635 635 3.19% 3.54%
D 19930 17912 10950 10950 54.94% 61.13%

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 14 170 97596 69.59 5488 5534 1322.9
A 0 253 33738 21.32 5488 5534 1322.9
A 12 189 27753 16.8 5488 5534 1322.9
B 8 234 170541 122.85 5704 5723 1341.6
B 5 249 144677 103.57 5704 5723 1341.6
B 15 22 143734 102.87 5704 5723 1341.6
C 10 34 2454163 1707.37 5141 5312 1434.3
C 15 241 820931 568.66 5141 5312 1434.3
C 3 111 71463 46.12 5141 5312 1434.3
D 12 188 27354928 25354.63 3682 3772 1078.7
D 11 131 576620 531.03 3682 3772 1078.7
D 1 4 332117 304.38 3682 3772 1078.7

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