ASTROSAT CZTI

Data Quality Report

Orbit 49609

Creation date: 2024-11-30T10:00:22.597928
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/AS1T05_233T01_9000006438_49609cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49609cztM0_level2_quad_clean.evt
Size (bytes)1,187,743,68046,702,080
Size1.1 GB 44.5 MB
Events in quadrant A17,135,394166,655
Events in quadrant B6,601,691651,747
Events in quadrant C4,518,1504,536
Events in quadrant D15,198,264120,887

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0554951
B0241321
C0183071
D0496915

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66006600100.000000%
B6601101715.406757%
C66016601100.000000%
D6600644597.651515%

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 7610 6602 6235 6235 81.93% 94.44%
B 7611 6603 741 741 9.74% 11.22%
C 7610 6600 153 153 2.01% 2.32%
D 7610 6600 4760 4760 62.55% 72.12%

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 0 99 3295864 40553.93 205 194 81.3
A 10 83 3177656 39099.35 205 194 81.3
A 9 191 2019679 24850.2 205 194 81.3
B 5 172 1015540 7177.08 665 644 141.4
B 3 232 907781 6415.03 665 644 141.4
B 4 206 579842 4095.94 665 644 141.4
C 15 181 1376599 103887.94 12 10 13.3
C 15 235 853223 64389.98 12 10 13.3
C 15 180 851517 64261.23 12 10 13.3
D 15 40 3329467 45598.53 166 155 73.0
D 15 122 2214825 30332.3 166 155 73.0
D 15 94 2070232 28351.94 166 155 73.0

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