ASTROSAT CZTI

Data Quality Report

Orbit 19960

Creation date: 2024-06-27T18:09:24.344661
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_036T01_9000002972_19960cztM0_level2.evt modeM0/AS1T03_036T01_9000002972_19960cztM0_level2_quad_clean.evt
Size (bytes)600,079,680101,977,920
Size572.3 MB 97.3 MB
Events in quadrant A4,640,941687,088
Events in quadrant B3,840,755699,827
Events in quadrant C4,727,193649,298
Events in quadrant D4,562,356636,672

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175622
B0153231
C0184821
D0175171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A593967311.331874%
B59392584.344166%
C59403295.538721%
D59405238.804714%

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 7249 5939 489 489 6.75% 8.23%
B 7249 5939 119 119 1.64% 2.00%
C 7250 5940 153 153 2.11% 2.58%
D 7250 5940 470 470 6.48% 7.91%

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 14 238 1514184 9849.18 772 759 153.7
A 14 254 135510 876.94 772 759 153.7
A 11 29 10576 63.89 772 759 153.7
B 7 220 612869 4162.07 784 767 147.1
B 0 197 84192 567.26 784 767 147.1
B 4 216 19114 124.75 784 767 147.1
C 3 233 1635063 9489.76 745 752 172.2
C 14 238 118431 683.31 745 752 172.2
C 9 221 47133 269.31 745 752 172.2
D 7 38 798872 4315.61 762 743 184.9
D 12 233 310081 1672.64 762 743 184.9
D 9 1 234417 1263.51 762 743 184.9

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