ASTROSAT CZTI

Data Quality Report

Orbit 21782

Creation date: 2024-06-27T18:32:04.413025
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/AS1A07_005T01_9000003224_21782cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21782cztM0_level2_quad_clean.evt
Size (bytes)796,348,80064,494,720
Size759.5 MB 61.5 MB
Events in quadrant A3,324,219423,674
Events in quadrant B3,653,262429,094
Events in quadrant C3,328,667402,352
Events in quadrant D13,383,319255,079

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139832
B0149572
C0138852
D0440542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6319450.712138%
B6320881.392405%
C6320881.392405%
D6320475575.237342%

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 7544 6320 1 1 0.01% 0.02%
B 7545 6321 19 19 0.25% 0.30%
C 7545 6321 0 0 0.00% 0.00%
D 7545 6320 4116 4116 54.55% 65.13%

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 12482 68.01 860 845 171.1
A 0 226 7770 40.47 860 845 171.1
A 5 16 7258 37.48 860 845 171.1
B 3 64 125829 780.55 858 840 160.1
B 0 190 57055 351.06 858 840 160.1
B 0 230 50695 311.34 858 840 160.1
C 14 238 131471 689.17 819 825 189.6
C 13 61 5961 27.09 819 825 189.6
C 1 16 3263 12.86 819 825 189.6
D 7 238 10523477 72902.09 600 582 144.3
D 1 52 278385 1924.61 600 582 144.3
D 13 153 137554 948.94 600 582 144.3

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