ASTROSAT CZTI

Data Quality Report

Orbit 28130

Creation date: 2024-06-27T19:48:25.767331
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/AS1A10_045T04_9000004066_28130cztM0_level2.evt modeM0/AS1A10_045T04_9000004066_28130cztM0_level2_quad_clean.evt
Size (bytes)641,344,32077,198,400
Size611.6 MB 73.6 MB
Events in quadrant A3,551,887469,982
Events in quadrant B4,934,577472,799
Events in quadrant C3,636,342452,676
Events in quadrant D6,804,878432,272

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151360
B0194160
C0153490
D0253250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73211341.830351%
B73214696.406229%
C73211952.663571%
D73216488.851250%

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 7561 7322 0 0 0.00% 0.00%
B 7561 7321 233 233 3.08% 3.18%
C 7561 7321 4 4 0.05% 0.05%
D 7561 7321 457 457 6.04% 6.24%

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 13 16923 85.54 915 895 187.4
A 13 254 11857 58.51 915 895 187.4
A 3 137 8953 43.01 915 895 187.4
B 10 245 1016896 5876.48 892 868 172.9
B 15 32 352313 2032.68 892 868 172.9
B 4 200 45914 260.54 892 868 172.9
C 14 238 139072 669.09 873 877 206.5
C 2 16 55340 263.69 873 877 206.5
C 3 233 37596 177.78 873 877 206.5
D 1 52 2580098 12342.7 862 840 209.0
D 5 222 344555 1644.8 862 840 209.0
D 2 250 249736 1191.06 862 840 209.0

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