ASTROSAT CZTI

Data Quality Report

Orbit 12320

Creation date: 2024-06-27T16:25:25.507952
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_048T01_9000001820_12320cztM0_level2.evt modeM0/AS1A04_048T01_9000001820_12320cztM0_level2_quad_clean.evt
Size (bytes)544,953,60075,847,680
Size519.7 MB 72.3 MB
Events in quadrant A4,578,698456,183
Events in quadrant B4,250,264463,587
Events in quadrant C3,153,150462,439
Events in quadrant D4,061,953441,609

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181002
B0168711
C0139901
D0166301

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67802613.849558%
B67804396.474926%
C6780851.253687%
D67802283.362832%

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 7586 6781 50 50 0.66% 0.74%
B 7586 6781 196 196 2.58% 2.89%
C 7586 6781 12 12 0.16% 0.18%
D 7586 6781 136 136 1.79% 2.01%

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 23 291848 1754.83 804 787 165.9
A 1 162 280049 1683.7 804 787 165.9
A 15 174 231538 1391.22 804 787 165.9
B 4 239 752044 5058.86 791 772 148.5
B 0 85 117719 787.49 791 772 148.5
B 3 64 99333 663.68 791 772 148.5
C 4 254 68918 375.23 789 792 181.6
C 15 208 6153 29.53 789 792 181.6
C 13 61 5696 27.01 789 792 181.6
D 5 222 688860 3638.25 786 762 189.1
D 1 52 79753 417.66 786 762 189.1
D 10 199 79207 414.77 786 762 189.1

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