ASTROSAT CZTI

Data Quality Report

Orbit 00681

Creation date: 2024-06-27T14:01:28.429380
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_141T01_9000000096_00681cztM0_level2.evt modeM0/AS1P01_141T01_9000000096_00681cztM0_level2_quad_clean.evt
Size (bytes)894,994,56066,081,600
Size853.5 MB 63.0 MB
Events in quadrant A7,055,681401,651
Events in quadrant B7,132,099408,501
Events in quadrant C6,402,779402,843
Events in quadrant D6,129,587383,147

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02211
B02211
C02211
D02211

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05013225065
B05059225297
C04633723176
D04469822350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236118
B0236118
C0236118
D0236118

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5788150.259157%
B578890.155494%
C578660.103699%
D5787130.224641%

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 6913 5789 243 243 3.52% 4.20%
B 6913 5789 233 233 3.37% 4.02%
C 6912 5788 167 167 2.42% 2.89%
D 6912 5788 138 138 2.00% 2.38%

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 5 203 19985 45.25 1835 1819 401.4
A 15 249 6426 11.48 1835 1819 401.4
A 3 111 5134 8.26 1835 1819 401.4
B 7 221 105367 243.84 1806 1818 424.7
B 0 220 75039 172.43 1806 1818 424.7
B 8 4 61002 139.37 1806 1818 424.7
C 15 241 10621 19.63 1634 1695 454.6
C -1 -1 -1 -1.0 1634 1695 454.6
C -1 -1 -1 -1.0 1634 1695 454.6
D 1 4 92514 184.89 1606 1664 491.4
D 12 22 22221 41.84 1606 1664 491.4
D 13 252 13476 24.04 1606 1664 491.4

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