ASTROSAT CZTI

Data Quality Report

Orbit 46600

Creation date: 2024-06-27T23:25:18.314346
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/AS1A13_092T08_9000006236_46600cztM0_level2.fits modeM0/AS1A13_092T08_9000006236_46600cztM0_level2_quad_clean.evt
Size (bytes)996,762,240174,493,440
Size950.6 MB 166.4 MB
Events in quadrant A11,346,4961,168,780
Events in quadrant B6,517,5821,221,744
Events in quadrant C5,176,1411,193,880
Events in quadrant D12,963,807898,218

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04131815
B0272374
C0238523
D04655422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115554143.582865%
B115591971.704300%
C11560400.346021%
D11552247721.442175%

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 12824 11560 136 136 1.06% 1.18%
B 12825 11563 28 28 0.22% 0.24%
C 12825 11563 14 14 0.11% 0.12%
D 12825 11560 1987 1987 15.49% 17.19%

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 5997922 22871.89 1254 1226 262.2
A 15 235 254944 967.7 1254 1226 262.2
A 9 191 101975 384.27 1254 1226 262.2
B 2 2 621740 2506.13 1267 1226 247.6
B 0 198 222602 894.09 1267 1226 247.6
B 0 245 108485 433.2 1267 1226 247.6
C 3 233 116222 388.7 1254 1260 295.8
C 12 249 51459 169.73 1254 1260 295.8
C 12 250 22579 72.08 1254 1260 295.8
D 1 52 6030033 21377.7 1126 1090 282.0
D 13 249 726255 2571.32 1126 1090 282.0
D 12 233 535111 1893.56 1126 1090 282.0

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