ASTROSAT CZTI

Data Quality Report

Orbit 15913

Creation date: 2024-06-27T17:15:04.181934
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/AS1A04_143T01_9000002344_15913cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15913cztM0_level2_quad_clean.evt
Size (bytes)536,569,920103,233,600
Size511.7 MB 98.5 MB
Events in quadrant A4,450,743649,413
Events in quadrant B3,807,229673,567
Events in quadrant C3,793,781640,935
Events in quadrant D3,680,130631,599

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01582
B01586
C01584
D01584

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018583466
B016740460
C016487446
D016764435

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76194455.840662%
B76233444.512659%
C76213344.382627%
D76273264.274289%

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 8179 7708 51 51 0.62% 0.66%
B 8183 7703 0 0 0.00% 0.00%
C 8182 7688 1 1 0.01% 0.01%
D 8170 7704 51 51 0.62% 0.66%

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 15 239 839083 4428.75 926 904 189.3
A 9 143 43416 224.62 926 904 189.3
A 0 226 8193 38.51 926 904 189.3
B 4 216 49117 263.88 932 905 182.7
B 4 173 45355 243.29 932 905 182.7
B 5 236 27759 146.98 932 905 182.7
C 14 238 134895 630.65 898 900 212.5
C 3 233 91412 426.0 898 900 212.5
C 0 207 34813 159.61 898 900 212.5
D 10 70 121223 537.35 914 885 223.9
D 13 172 70641 311.49 914 885 223.9
D 2 234 43695 191.16 914 885 223.9

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