ASTROSAT CZTI

Data Quality Report

Orbit 27520

Creation date: 2024-06-27T19:40:56.410170
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/AS1T03_249T01_9000003934_27520cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27520cztM0_level2_quad_clean.evt
Size (bytes)485,274,24086,725,440
Size462.8 MB 82.7 MB
Events in quadrant A3,181,466552,016
Events in quadrant B3,240,206559,703
Events in quadrant C3,198,185530,829
Events in quadrant D4,625,228519,988

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136120
B0136790
C0136030
D0181620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6654691.036970%
B6654741.112113%
C6654891.337541%
D66541722.584911%

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 7139 6654 0 0 0.00% 0.00%
B 7139 6654 4 4 0.06% 0.06%
C 7139 6655 0 0 0.00% 0.00%
D 7139 6654 123 123 1.72% 1.85%

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 10713 59.65 824 807 166.1
A 3 137 7942 42.97 824 807 166.1
A 0 226 7140 38.14 824 807 166.1
B 12 111 19538 118.97 811 791 157.6
B 0 230 18115 109.94 811 791 157.6
B 15 32 17481 105.91 811 791 157.6
C 14 238 124537 668.54 784 788 185.1
C 2 16 18305 94.63 784 788 185.1
C 13 61 5347 24.63 784 788 185.1
D 1 52 1334316 6994.8 789 766 190.6
D 11 176 92856 483.03 789 766 190.6
D 7 80 83030 431.49 789 766 190.6

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