ASTROSAT CZTI

Data Quality Report

Orbit 25565

Creation date: 2024-06-27T19:19:05.187772
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_043T02_9000003726_25565cztM0_level2.evt modeM0/AS1A09_043T02_9000003726_25565cztM0_level2_quad_clean.evt
Size (bytes)544,060,80094,282,560
Size518.9 MB 89.9 MB
Events in quadrant A3,502,385616,478
Events in quadrant B3,603,002620,758
Events in quadrant C3,510,489580,876
Events in quadrant D5,393,242556,709

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143860
B0146360
C0144470
D0204580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68961311.899652%
B68951682.436548%
C68951862.697607%
D68954035.844815%

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 7696 6897 0 0 0.00% 0.00%
B 7695 6896 0 0 0.00% 0.00%
C 7695 6896 3 3 0.04% 0.04%
D 7695 6896 270 270 3.51% 3.92%

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 13 254 11578 58.54 908 890 182.6
A 3 137 8126 39.63 908 890 182.6
A 0 226 7858 38.16 908 890 182.6
B 0 219 50709 292.04 893 872 170.7
B 0 190 26551 150.48 893 872 170.7
B 3 112 26205 148.45 893 872 170.7
C 14 238 136890 679.52 852 856 200.2
C 2 16 41098 201.02 852 856 200.2
C 3 233 14204 66.68 852 856 200.2
D 1 52 1098295 5165.51 861 834 212.5
D 2 244 532886 2504.25 861 834 212.5
D 8 195 352153 1653.58 861 834 212.5

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