ASTROSAT CZTI

Data Quality Report

Orbit 18232

Creation date: 2024-06-27T17:47:07.008716
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/AS1C04_001T01_9000002716_18232cztM0_level2.evt modeM0/AS1C04_001T01_9000002716_18232cztM0_level2_quad_clean.evt
Size (bytes)743,040,000121,109,760
Size708.6 MB 115.5 MB
Events in quadrant A3,355,461879,343
Events in quadrant B3,306,960897,524
Events in quadrant C3,342,475861,743
Events in quadrant D12,016,967533,199

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149522
B0146642
C0147122
D0404182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7112761.068616%
B7113690.970055%
C7113891.251230%
D7113338047.518628%

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 8677 7114 19 19 0.22% 0.27%
B 8678 7115 2 2 0.02% 0.03%
C 8678 7115 0 0 0.00% 0.00%
D 8678 7115 3152 3152 36.32% 44.30%

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 15 174 162044 949.88 829 806 169.7
A 11 29 7922 41.92 829 806 169.7
A 0 226 7233 37.86 829 806 169.7
B 7 220 25582 156.27 834 811 158.5
B 12 111 19043 115.02 834 811 158.5
B 11 111 16409 98.4 834 811 158.5
C 14 238 125354 658.51 805 808 189.1
C 3 233 73644 385.11 805 808 189.1
C 7 174 7091 33.22 805 808 189.1
D 7 238 8298518 60993.18 555 537 136.0
D 1 52 816332 5996.39 555 537 136.0
D 5 222 497503 3652.88 555 537 136.0

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