ASTROSAT CZTI

Data Quality Report

Orbit 00957

Creation date: 2024-06-27T14:05:18.117938
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/AS1P01_998T01_9000000188_00957cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00957cztM0_level2_quad_clean.evt
Size (bytes)1,147,999,680103,389,120
Size1.1 GB 98.6 MB
Events in quadrant A7,858,449685,499
Events in quadrant B8,517,746679,550
Events in quadrant C9,775,347655,934
Events in quadrant D8,180,133650,554

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280270
B0299870
C0336530
D0289900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6591200.303444%
B6592390.591626%
C6592841.274272%
D65921131.714199%

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 7601 6592 269 269 3.54% 4.08%
B 7602 6593 359 359 4.72% 5.45%
C 7602 6593 721 721 9.48% 10.94%
D 7602 6593 507 507 6.67% 7.69%

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 14 170 176630 362.01 2000 2011 482.4
A 11 79 7469 11.32 2000 2011 482.4
A 3 111 5979 8.23 2000 2011 482.4
B 0 220 193872 388.13 2104 2106 494.1
B 7 221 144189 287.57 2104 2106 494.1
B 4 232 42177 81.1 2104 2106 494.1
C 10 34 1456660 2695.54 1952 2026 539.6
C 15 241 312542 575.41 1952 2026 539.6
C 9 52 222754 409.02 1952 2026 539.6
D 1 4 589220 1095.22 1914 1953 536.2
D 7 222 137560 252.9 1914 1953 536.2
D 13 73 113049 207.19 1914 1953 536.2

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