ASTROSAT CZTI

Data Quality Report

Orbit 24000

Creation date: 2024-06-27T19:01:00.007516
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/AS1A07_165T01_9000003558_24000cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24000cztM0_level2_quad_clean.evt
Size (bytes)471,427,200129,893,760
Size449.6 MB 123.9 MB
Events in quadrant A3,007,146909,307
Events in quadrant B3,112,091915,546
Events in quadrant C3,357,606862,537
Events in quadrant D4,395,399830,135

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124631
B0128091
C0137081
D0169442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5962741.241194%
B5963871.458997%
C59631402.347812%
D59623575.987924%

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 7222 5963 0 0 0.00% 0.00%
B 7223 5964 4 4 0.06% 0.07%
C 7223 5964 18 18 0.25% 0.30%
D 7222 5963 223 223 3.09% 3.74%

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 13 254 10945 65.73 779 764 154.9
A 0 226 6892 39.56 779 764 154.9
A 3 137 6032 34.01 779 764 154.9
B 0 190 26953 185.08 772 757 141.5
B 12 111 15814 106.38 772 757 141.5
B 0 228 15259 102.46 772 757 141.5
C 0 239 239549 1431.13 732 738 166.9
C 14 238 118521 705.84 732 738 166.9
C 7 247 82681 491.06 732 738 166.9
D 12 218 941451 5476.19 730 713 171.8
D 7 238 333414 1936.71 730 713 171.8
D 8 195 128674 744.88 730 713 171.8

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