ASTROSAT CZTI

Data Quality Report

Orbit 47614

Creation date: 2024-07-18T11:07:13.441199
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_071T01_9000006340_47614cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47614cztM0_level2_quad_clean.evt
Size (bytes)1,520,438,400294,678,720
Size1.4 GB 281.0 MB
Events in quadrant A22,948,1281,851,243
Events in quadrant B9,761,1892,067,663
Events in quadrant C9,049,9121,980,029
Events in quadrant D13,013,5191,676,870

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0823483
B0420723
C0412233
D0528543

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19534221411.334084%
B195354332.216534%
C195352961.515229%
D1953415197.776185%

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 20764 19539 1095 1095 5.27% 5.60%
B 20765 19540 13 13 0.06% 0.07%
C 20765 19540 26 26 0.13% 0.13%
D 20764 19539 1096 1096 5.28% 5.61%

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 9941057 22444.07 2135 2084 442.8
A 13 248 2821772 6367.39 2135 2084 442.8
A 9 191 1716305 3871.03 2135 2084 442.8
B 0 200 500678 1144.32 2200 2127 435.7
B 5 172 155439 351.89 2200 2127 435.7
B 0 186 133006 300.4 2200 2127 435.7
C 3 233 274320 531.93 2172 2179 511.6
C 14 254 202563 391.67 2172 2179 511.6
C 1 3 76774 145.8 2172 2179 511.6
D 12 2 2145896 4074.03 2097 2032 526.2
D 2 249 1315136 2495.32 2097 2032 526.2
D 13 171 636867 1206.39 2097 2032 526.2

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