ASTROSAT CZTI

Data Quality Report

Orbit 07531

Creation date: 2024-06-27T15:20:54.881002
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/AS1G06_076T01_9000001038_07531cztM0_level2.evt modeM0/AS1G06_076T01_9000001038_07531cztM0_level2_quad_clean.evt
Size (bytes)490,642,560102,565,440
Size467.9 MB 97.8 MB
Events in quadrant A3,421,371651,429
Events in quadrant B3,602,630666,974
Events in quadrant C3,421,718646,669
Events in quadrant D3,900,616616,066

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155363
B0159442
C0155812
D0171462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7556540.714664%
B7556811.071996%
C7556330.436739%
D7556981.296983%

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 8146 7559 0 0 0.00% 0.00%
B 8146 7559 4 4 0.05% 0.05%
C 8146 7559 3 3 0.04% 0.04%
D 8146 7559 60 60 0.74% 0.79%

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 14 27128 144.73 880 860 181.5
A 0 226 8595 42.62 880 860 181.5
A 12 194 7717 37.78 880 860 181.5
B 0 219 61898 355.23 893 868 171.8
B 4 173 18690 103.73 893 868 171.8
B 12 111 17070 94.3 893 868 171.8
C 1 16 29597 144.55 856 860 198.8
C 8 128 19219 92.35 856 860 198.8
C 8 229 13134 61.74 856 860 198.8
D 2 152 236917 1141.42 846 820 206.8
D 5 233 172055 827.84 846 820 206.8
D 2 136 57506 274.05 846 820 206.8

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