ASTROSAT CZTI

Data Quality Report

Orbit 18238

Creation date: 2024-06-27T17:47:13.808116
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/AS1A05_019T01_9000002718_18238cztM0_level2.evt modeM0/AS1A05_019T01_9000002718_18238cztM0_level2_quad_clean.evt
Size (bytes)416,753,28087,503,040
Size397.4 MB 83.4 MB
Events in quadrant A2,973,992587,123
Events in quadrant B2,732,420601,220
Events in quadrant C2,598,631561,198
Events in quadrant D3,964,506537,501

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119681
B0111801
C0109091
D0151071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51751492.879227%
B5175931.797101%
C5175791.526570%
D51753987.690821%

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 6550 5176 69 69 1.05% 1.33%
B 6550 5176 8 8 0.12% 0.15%
C 6550 5176 0 0 0.00% 0.00%
D 6550 5176 316 316 4.82% 6.11%

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 351534 2577.62 680 669 136.1
A 4 2 6698 44.29 680 669 136.1
A 0 226 6108 39.96 680 669 136.1
B 0 197 31494 237.66 677 662 129.7
B 7 220 28186 212.16 677 662 129.7
B 12 111 14428 106.11 677 662 129.7
C 14 238 100786 672.03 637 642 149.0
C 7 174 4874 28.4 637 642 149.0
C 4 223 4817 28.01 637 642 149.0
D 1 52 1301179 8291.33 642 624 156.9
D 7 238 69403 438.48 642 624 156.9
D 13 104 50488 317.89 642 624 156.9

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