ASTROSAT CZTI

Data Quality Report

Orbit 18456

Creation date: 2024-06-27T17:50:03.212412
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/AS1A05_199T01_9000002732_18456cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18456cztM0_level2_quad_clean.evt
Size (bytes)183,116,16055,252,800
Size174.6 MB 52.7 MB
Events in quadrant A1,301,172369,336
Events in quadrant B1,296,656384,368
Events in quadrant C1,527,117368,853
Events in quadrant D1,234,692357,036

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A056861
B056501
C062691
D055711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A270240.148038%
B270250.185048%
C2702301.110289%
D270250.185048%

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 2702 2702 1 1 0.04% 0.04%
B 2702 2702 1 1 0.04% 0.04%
C 2702 2702 12 12 0.44% 0.44%
D 2702 2702 4 4 0.15% 0.15%

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 14 238 73271 1126.9 316 310 64.7
A 4 2 10531 157.87 316 310 64.7
A 0 226 2659 36.28 316 310 64.7
B 10 245 39435 630.65 323 315 62.0
B 12 111 6956 107.06 323 315 62.0
B 11 111 5877 89.66 323 315 62.0
C 9 54 204374 2768.88 312 314 73.7
C 3 233 56789 766.31 312 314 73.7
C 14 238 50072 675.16 312 314 73.7
D 12 110 46588 619.63 307 299 74.7
D 2 234 9789 127.03 307 299 74.7
D 2 120 9085 117.61 307 299 74.7

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