ASTROSAT CZTI

Data Quality Report

Orbit 47652

Creation date: 2024-07-20T23:15:24.945641
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_47652cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47652cztM0_level2_quad_clean.evt
Size (bytes)454,752,000105,255,360
Size433.7 MB 100.4 MB
Events in quadrant A6,940,167693,197
Events in quadrant B3,496,464708,992
Events in quadrant C2,938,149687,530
Events in quadrant D2,950,082640,851

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253614
B0150571
C0137051
D0137161

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65482333.558338%
B65491482.259887%
C6549320.488624%
D6549120.183234%

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 7253 6549 56 56 0.77% 0.86%
B 7254 6550 80 80 1.10% 1.22%
C 7254 6550 23 23 0.32% 0.35%
D 7254 6550 4 4 0.06% 0.06%

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 3808887 25422.62 719 705 149.8
A 9 191 290372 1933.76 719 705 149.8
A 13 248 34737 227.19 719 705 149.8
B 5 172 381534 2695.56 711 690 141.3
B 5 255 216160 1525.07 711 690 141.3
B 0 190 29517 204.03 711 690 141.3
C 14 254 193903 1165.21 702 704 165.8
C 12 250 6868 37.17 702 704 165.8
C 13 61 4755 24.43 702 704 165.8
D 2 249 45185 250.21 707 682 177.9
D 5 171 39405 217.71 707 682 177.9
D 8 176 38065 210.18 707 682 177.9

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