ASTROSAT CZTI

Data Quality Report

Orbit 06898

Creation date: 2024-06-27T15:12:49.477173
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/AS1A02_005T01_9000000948_06898cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06898cztM0_level2_quad_clean.evt
Size (bytes)458,069,76093,409,920
Size436.8 MB 89.1 MB
Events in quadrant A3,537,654586,539
Events in quadrant B3,179,058596,947
Events in quadrant C3,093,469589,630
Events in quadrant D3,585,730567,092

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153703
B0142442
C0142442
D0156112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7023410.583796%
B7023120.170867%
C7023180.256301%
D7023741.053681%

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 7873 7024 8 8 0.10% 0.11%
B 7873 7024 1 1 0.01% 0.01%
C 7873 7024 0 0 0.00% 0.00%
D 7873 7024 50 50 0.64% 0.71%

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 0 23 318061 1945.17 795 777 163.1
A 13 248 107594 654.86 795 777 163.1
A 0 226 29475 175.94 795 777 163.1
B 4 81 26476 166.32 802 780 154.5
B 15 204 23647 148.01 802 780 154.5
B 12 111 15782 97.1 802 780 154.5
C 9 247 62702 346.26 767 770 178.9
C 9 54 23258 125.73 767 770 178.9
C 13 61 5805 28.15 767 770 178.9
D 2 216 386861 2056.14 765 742 187.8
D 8 195 100727 532.44 765 742 187.8
D 2 14 71567 377.15 765 742 187.8

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