ASTROSAT CZTI

Data Quality Report

Orbit 46331

Creation date: 2024-06-27T23:21:49.843224
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/AS1T05_200T01_9000006196_46331cztM0_level2.fits modeM0/AS1T05_200T01_9000006196_46331cztM0_level2_quad_clean.evt
Size (bytes)658,123,200101,134,080
Size627.6 MB 96.4 MB
Events in quadrant A11,832,440455,869
Events in quadrant B4,579,817770,382
Events in quadrant C3,013,005736,330
Events in quadrant D4,426,635641,176

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0397332
B0181763
C0137182
D0178182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6571310547.253082%
B65701862.831050%
C6570751.141553%
D65704396.681887%

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 7561 6571 2361 2361 31.23% 35.93%
B 7560 6571 30 30 0.40% 0.46%
C 7560 6571 8 8 0.11% 0.12%
D 7560 6571 274 274 3.62% 4.17%

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 6456402 49251.01 636 621 131.1
A 10 83 2614327 19939.91 636 621 131.1
A 9 191 260447 1982.21 636 621 131.1
B 3 112 1401365 9386.33 763 740 149.2
B 5 172 62490 413.82 763 740 149.2
B 4 171 60965 403.6 763 740 149.2
C 12 2 46816 263.2 750 755 175.0
C 1 3 15930 86.71 750 755 175.0
C 11 16 12798 68.82 750 755 175.0
D 13 249 996182 5399.74 736 714 184.4
D 1 52 379642 2055.43 736 714 184.4
D 2 249 82548 443.89 736 714 184.4

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