ASTROSAT CZTI

Data Quality Report

Orbit 49854

Creation date: 2024-12-16T10:11:19.577176
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_037T01_9000006440_49854cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49854cztM0_level2_quad_clean.evt
Size (bytes)1,028,540,16058,236,480
Size980.9 MB 55.5 MB
Events in quadrant A8,203,558544,884
Events in quadrant B3,844,774705,303
Events in quadrant C12,402,79962,028
Events in quadrant D13,124,6793,514

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288551
B0156711
C0412772
D0433981

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6413131020.427257%
B64141782.775179%
C6413592192.328084%
D6413639099.641354%

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 7589 6414 1100 1100 14.49% 17.15%
B 7590 6414 59 59 0.78% 0.92%
C 7588 6412 3033 3033 39.97% 47.30%
D 7588 6412 3481 3481 45.88% 54.29%

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 3 84 2874134 16841.98 686 671 170.6
A 15 160 368974 2158.7 686 671 170.6
A 8 38 292735 1711.85 686 671 170.6
B 0 229 299228 1960.87 725 704 152.2
B 4 206 220376 1442.93 725 704 152.2
B 1 255 110603 721.88 725 704 152.2
C 15 189 3597828 48974.19 236 233 73.5
C 15 197 1242957 16917.25 236 233 73.5
C 15 164 982387 13370.1 236 233 73.5
D 7 61 6228052 103014.57 178 169 60.5
D 8 129 2231097 36901.48 178 169 60.5
D 7 126 1055023 17448.2 178 169 60.5

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