ASTROSAT CZTI

Data Quality Report

Orbit 40719

Creation date: 2024-06-27T22:19:32.844009
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_029T02_9000005558_40719cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40719cztM0_level2_quad_clean.evt
Size (bytes)99,895,68028,696,320
Size95.3 MB 27.4 MB
Events in quadrant A918,001194,927
Events in quadrant B783,333202,988
Events in quadrant C847,944196,512
Events in quadrant D1,018,648154,861

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037931
B033871
C035131
D041711

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A163060.368098%
B163010.061350%
C163020.122699%
D163024815.214724%

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 1630 1630 2 2 0.12% 0.12%
B 1630 1630 0 0 0.00% 0.00%
C 1630 1630 1 1 0.06% 0.06%
D 1630 1630 34 34 2.09% 2.09%

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 187262 4795.69 183 179 39.0
A 12 189 21942 557.87 183 179 39.0
A 13 254 2838 68.16 183 179 39.0
B 0 190 40697 1071.71 186 181 37.8
B 5 255 7890 203.92 186 181 37.8
B 12 111 4431 112.42 186 181 37.8
C 15 214 72725 1601.89 187 188 45.3
C 9 187 35240 774.08 187 188 45.3
C 12 249 7568 162.98 187 188 45.3
D 2 250 99807 2321.5 168 163 42.9
D 1 52 79524 1848.95 168 163 42.9
D 12 191 60422 1403.91 168 163 42.9

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