ASTROSAT CZTI

Data Quality Report

Orbit 24941

Creation date: 2024-06-27T19:11:43.300580
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/AS1T03_200T01_9000003654_24941cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24941cztM0_level2_quad_clean.evt
Size (bytes)515,787,840134,688,960
Size491.9 MB 128.4 MB
Events in quadrant A3,172,133937,131
Events in quadrant B3,396,358955,351
Events in quadrant C3,913,853892,393
Events in quadrant D4,702,856846,784

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133322
B0140712
C0162552
D0182982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6421380.591808%
B64211061.650833%
C64211091.697555%
D64215188.067279%

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 7736 6422 0 0 0.00% 0.00%
B 7736 6422 30 30 0.39% 0.47%
C 7736 6422 0 0 0.00% 0.00%
D 7736 6422 403 403 5.21% 6.28%

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 15 223 21021 125.26 811 798 161.5
A 6 16 17715 104.78 811 798 161.5
A 13 254 10436 59.7 811 798 161.5
B 5 172 160660 1067.33 810 792 149.8
B 12 111 17526 111.72 810 792 149.8
B 11 111 15430 97.73 810 792 149.8
C 7 247 781490 4441.01 767 770 175.8
C 14 238 126989 717.98 767 770 175.8
C 0 207 5578 27.35 767 770 175.8
D 1 52 1556998 8576.78 758 738 181.5
D 2 244 81766 446.56 758 738 181.5
D 8 195 81420 444.65 758 738 181.5

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