ASTROSAT CZTI

Data Quality Report

Orbit 45658

Creation date: 2024-06-27T23:14:39.999717
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_071T07_9000006116_45658cztM0_level2.fits modeM0/AS1A13_071T07_9000006116_45658cztM0_level2_quad_clean.evt
Size (bytes)1,022,976,000227,707,200
Size975.6 MB 217.2 MB
Events in quadrant A12,303,5921,513,942
Events in quadrant B7,138,3441,562,622
Events in quadrant C6,782,9241,507,583
Events in quadrant D10,523,7091,311,313

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0459793
B0310863
C0305513
D0411223

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02940
B02940
C02940
D02940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144673072.122071%
B144681801.244125%
C14468990.684269%
D144688535.895770%

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 16782 14470 32 32 0.19% 0.22%
B 16783 14471 73 73 0.43% 0.50%
C 16783 14470 19 19 0.11% 0.13%
D 16783 14471 662 662 3.94% 4.57%

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 5965909 18336.34 1580 1546 325.3
A 13 248 97205 294.09 1580 1546 325.3
A 2 79 70710 212.63 1580 1546 325.3
B 5 172 212707 683.76 1577 1531 308.8
B 0 190 203093 652.63 1577 1531 308.8
B 0 183 156921 503.13 1577 1531 308.8
C 9 54 584698 1598.97 1558 1567 364.7
C 14 254 48129 127.67 1558 1567 364.7
C 3 233 30409 79.09 1558 1567 364.7
D 13 249 1925389 5051.62 1526 1480 380.9
D 1 52 1507142 3953.42 1526 1480 380.9
D 8 129 403788 1056.34 1526 1480 380.9

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