ASTROSAT CZTI

Data Quality Report

Orbit 23657

Creation date: 2024-06-27T18:57:18.244799
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_160T07_9000003494_23657cztM0_level2.evt modeM0/AS1A07_160T07_9000003494_23657cztM0_level2_quad_clean.evt
Size (bytes)620,994,240105,707,520
Size592.2 MB 100.8 MB
Events in quadrant A4,218,112655,460
Events in quadrant B4,989,187660,112
Events in quadrant C4,250,498644,802
Events in quadrant D4,758,077635,613

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181523
B0201672
C0181872
D0200362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87103163.628014%
B87104465.120551%
C87103534.052813%
D87103383.880597%

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 9210 8710 0 0 0.00% 0.00%
B 9210 8710 83 83 0.90% 0.95%
C 9210 8710 0 0 0.00% 0.00%
D 9210 8710 64 64 0.69% 0.73%

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 14888 61.49 1093 1067 224.8
A 3 137 10228 40.76 1093 1067 224.8
A 0 226 9316 36.7 1093 1067 224.8
B 3 64 561721 2640.23 1076 1046 212.4
B 0 229 49684 229.04 1076 1046 212.4
B 0 189 40961 187.96 1076 1046 212.4
C 14 238 158786 636.78 1044 1047 247.7
C 7 247 22765 87.67 1044 1047 247.7
C 13 61 7246 25.02 1044 1047 247.7
D 12 233 205255 781.39 1062 1032 261.4
D 9 85 201186 765.82 1062 1032 261.4
D 13 189 160232 609.12 1062 1032 261.4

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