ASTROSAT CZTI

Data Quality Report

Orbit 16136

Creation date: 2024-06-27T17:18:30.213299
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/AS1T02_092T01_9000002384_16136cztM0_level2.evt modeM0/AS1T02_092T01_9000002384_16136cztM0_level2_quad_clean.evt
Size (bytes)492,549,12088,920,000
Size469.7 MB 84.8 MB
Events in quadrant A3,619,676576,706
Events in quadrant B3,819,822574,780
Events in quadrant C3,443,928544,311
Events in quadrant D3,588,793540,219

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147313
B0154842
C0142592
D0147672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65511171.785987%
B65511712.610289%
C65511181.801252%
D65511311.999695%

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 7657 6553 12 12 0.16% 0.18%
B 7657 6553 25 25 0.33% 0.38%
C 7657 6553 0 0 0.00% 0.00%
D 7657 6553 71 71 0.93% 1.08%

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 15 174 189137 1096.66 853 837 171.7
A 15 223 95406 550.77 853 837 171.7
A 0 253 36539 207.93 853 837 171.7
B 0 189 118747 734.96 845 826 160.4
B 5 65 102428 633.25 845 826 160.4
B 4 173 82046 506.22 845 826 160.4
C 3 233 174683 938.39 799 805 185.3
C 14 238 124386 666.95 799 805 185.3
C 0 207 20444 105.99 799 805 185.3
D 1 52 443085 2210.25 818 793 200.1
D 2 234 25145 121.69 818 793 200.1
D 10 70 16992 80.95 818 793 200.1

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