ASTROSAT CZTI

Data Quality Report

Orbit 01785

Creation date: 2024-06-27T14:12:40.131458
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/AS1G02_020T01_9000000296_01785cztM0_level2.evt modeM0/AS1G02_020T01_9000000296_01785cztM0_level2_quad_clean.evt
Size (bytes)1,159,715,52095,051,520
Size1.1 GB 90.6 MB
Events in quadrant A8,814,691606,369
Events in quadrant B8,632,252615,864
Events in quadrant C8,230,541596,496
Events in quadrant D8,983,084574,139

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311462
B0305872
C0294012
D0316689

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A697180.114761%
B6971150.215177%
C6971120.172142%
D69692343.357727%

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 7211 6973 292 292 4.05% 4.19%
B 7211 6973 265 265 3.67% 3.80%
C 7211 6973 217 217 3.01% 3.11%
D 7211 6972 605 605 8.39% 8.68%

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 0 231 486911 928.33 2171 2186 522.1
A 10 2 13123 20.95 2171 2186 522.1
A 15 233 8421 11.94 2171 2186 522.1
B 0 220 85887 156.63 2253 2262 533.9
B 0 234 9550 13.65 2253 2262 533.9
B 4 200 8165 11.06 2253 2262 533.9
C 8 208 154076 264.21 2058 2136 575.1
C 10 82 35765 58.48 2058 2136 575.1
C 14 48 9131 12.16 2058 2136 575.1
D 13 72 566421 912.74 1993 2058 618.3
D 7 85 519560 836.95 1993 2058 618.3
D 13 169 179634 287.19 1993 2058 618.3

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