ASTROSAT CZTI

Data Quality Report

Orbit 39324

Creation date: 2024-06-27T22:03:14.697863
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/AS1A12_061T07_9000005468_39324cztM0_level2.fits modeM0/AS1A12_061T07_9000005468_39324cztM0_level2_quad_clean.evt
Size (bytes)654,203,520160,024,320
Size623.9 MB 152.6 MB
Events in quadrant A4,987,7341,087,699
Events in quadrant B4,480,9961,106,877
Events in quadrant C4,800,9881,050,250
Events in quadrant D9,189,623923,321

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209742
B0202502
C0204142
D0341182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9765280.286738%
B9765400.409626%
C976580.081925%
D97658298.489503%

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 11107 9766 10 10 0.09% 0.10%
B 11107 9766 12 12 0.11% 0.12%
C 11107 9766 5 5 0.05% 0.05%
D 11107 9766 725 725 6.53% 7.42%

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 10 83 622033 2803.39 1087 1063 221.5
A 13 248 106545 476.2 1087 1063 221.5
A 15 222 50662 223.92 1087 1063 221.5
B 5 172 174225 830.96 1081 1051 208.4
B 5 255 44087 206.5 1081 1051 208.4
B 12 111 27663 127.7 1081 1051 208.4
C 15 214 431755 1732.27 1060 1064 248.6
C 9 187 205291 821.42 1060 1064 248.6
C 14 254 12989 47.96 1060 1064 248.6
D 12 235 4445050 17728.12 1026 998 250.7
D 13 249 432251 1720.35 1026 998 250.7
D 5 222 118926 470.44 1026 998 250.7

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