ASTROSAT CZTI

Data Quality Report

Orbit 27012

Creation date: 2024-06-27T19:35:33.731829
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/AS1A09_145T01_9000003900_27012cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_27012cztM0_level2_quad_clean.evt
Size (bytes)551,877,120114,301,440
Size526.3 MB 109.0 MB
Events in quadrant A4,934,869735,967
Events in quadrant B3,782,081783,703
Events in quadrant C3,524,859747,613
Events in quadrant D4,007,851717,728

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190220
B0153800
C0145480
D0164640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68453635.303141%
B68451301.899196%
C6845861.256392%
D68451402.045289%

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 7939 6845 326 326 4.11% 4.76%
B 7940 6845 57 57 0.72% 0.83%
C 7940 6846 0 0 0.00% 0.00%
D 7940 6846 107 107 1.35% 1.56%

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 6 16 1116362 6345.07 873 857 175.8
A 14 235 424352 2408.87 873 857 175.8
A 8 192 24100 132.21 873 857 175.8
B 10 245 162389 946.92 894 873 170.6
B 0 189 103224 600.05 894 873 170.6
B 0 219 27680 157.16 894 873 170.6
C 14 238 140014 686.96 863 873 202.5
C 5 218 8902 39.64 863 873 202.5
C 13 61 5799 24.32 863 873 202.5
D 1 52 499381 2426.84 854 834 205.4
D 11 176 120574 582.87 854 834 205.4
D 12 1 113694 549.38 854 834 205.4

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