ASTROSAT CZTI

Data Quality Report

Orbit 14039

Creation date: 2024-06-27T16:49:31.920154
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_162T01_9000002074_14039cztM0_level2.evt modeM0/AS1A04_162T01_9000002074_14039cztM0_level2_quad_clean.evt
Size (bytes)452,453,760123,641,280
Size431.5 MB 117.9 MB
Events in quadrant A2,861,417862,341
Events in quadrant B3,060,037870,357
Events in quadrant C2,922,292827,083
Events in quadrant D4,466,516781,357

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122042
B0128521
C0122641
D0171861

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5774671.160374%
B5774671.160374%
C5774400.692761%
D57744287.412539%

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 7110 5776 0 0 0.00% 0.00%
B 7110 5776 3 3 0.04% 0.05%
C 7110 5776 1 1 0.01% 0.02%
D 7110 5776 364 364 5.12% 6.30%

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 1 162 12860 80.87 739 727 150.0
A 0 226 6638 39.4 739 727 150.0
A 12 194 5685 33.05 739 727 150.0
B 0 189 142132 1040.08 733 715 136.0
B 0 219 33253 239.31 733 715 136.0
B 3 209 21410 152.2 733 715 136.0
C 3 233 190790 1197.21 698 702 158.8
C 0 207 10525 61.87 698 702 158.8
C 13 61 5354 29.3 698 702 158.8
D 13 104 703940 4313.11 683 667 163.1
D 1 52 675579 4139.17 683 667 163.1
D 10 157 415226 2542.45 683 667 163.1

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