ASTROSAT CZTI

Data Quality Report

Orbit 35304

Creation date: 2024-06-27T21:11:47.126498
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_023T01_9000005058_35304cztM0_level2.evt modeM0/AS1T05_023T01_9000005058_35304cztM0_level2_quad_clean.evt
Size (bytes)582,649,92062,792,640
Size555.7 MB 59.9 MB
Events in quadrant A3,384,894410,070
Events in quadrant B7,707,189329,688
Events in quadrant C3,032,528399,239
Events in quadrant D3,157,121385,457

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135133
B0265972
C0120102
D0127752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5370200.372439%
B5370204938.156425%
C5370851.582868%
D5370581.080074%

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 7373 5371 13 13 0.18% 0.24%
B 7372 5369 1541 1541 20.90% 28.70%
C 7373 5371 77 77 1.04% 1.43%
D 7373 5371 47 47 0.64% 0.88%

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 15 169 650130 4887.86 665 654 132.9
A 10 83 97731 730.59 665 654 132.9
A 7 3 36246 267.86 665 654 132.9
B 5 236 4185021 39400.25 560 546 106.2
B 5 172 1307176 12302.98 560 546 106.2
B 12 111 12791 115.29 560 546 106.2
C 0 10 289323 1995.49 632 636 144.7
C 15 214 225640 1555.3 632 636 144.7
C 0 207 38715 263.21 632 636 144.7
D 8 195 267222 1746.91 636 620 152.6
D 13 249 155558 1015.23 636 620 152.6
D 1 239 57766 374.45 636 620 152.6

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