ASTROSAT CZTI

Data Quality Report

Orbit 35733

Creation date: 2022-05-10T16:02:37.731670
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_029T05_9000005124_35733cztM0_level2.evt modeM0/AS1A09_029T05_9000005124_35733cztM0_level2_quad_clean.evt
Size (bytes)622,324,800122,339,520
Size593.5 MB 116.7 MB
Events in quadrant A4,763,251776,581
Events in quadrant B4,294,942791,337
Events in quadrant C4,609,061775,713
Events in quadrant D4,577,267744,686

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198682
B0187332
C0190862
D0195612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88871341.507820%
B8887550.618882%
C8887540.607629%
D88871141.282773%

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 10230 8888 96 96 0.94% 1.08%
B 10230 8888 36 36 0.35% 0.41%
C 10230 8888 35 35 0.34% 0.39%
D 10230 8888 100 100 0.98% 1.13%

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 15 169 658815 3238.33 1001 978 203.1
A 10 83 194201 951.18 1001 978 203.1
A 13 6 24439 115.49 1001 978 203.1
B 5 172 306342 1603.14 996 969 190.5
B 5 255 33094 168.65 996 969 190.5
B 12 111 23924 120.51 996 969 190.5
C 15 214 370193 1628.07 971 975 226.8
C 0 10 366849 1613.32 971 975 226.8
C 0 207 50534 218.53 971 975 226.8
D 13 249 415213 1748.06 974 945 237.0
D 1 52 75259 313.58 974 945 237.0
D 2 153 67600 281.26 974 945 237.0

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