ASTROSAT CZTI

Data Quality Report

Orbit 26957

Creation date: 2024-06-27T19:34:57.539817
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/AS1C05_019T03_9000003898_26957cztM0_level2.evt modeM0/AS1C05_019T03_9000003898_26957cztM0_level2_quad_clean.evt
Size (bytes)486,645,12084,156,480
Size464.1 MB 80.3 MB
Events in quadrant A3,074,160566,342
Events in quadrant B6,550,388513,808
Events in quadrant C2,249,068580,860
Events in quadrant D2,554,275565,782

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121120
B0225850
C095310
D0106160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A45594499.848651%
B4559187841.193244%
C45591473.224391%
D45581393.049583%

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 4699 4559 193 193 4.11% 4.23%
B 4699 4559 1186 1186 25.24% 26.01%
C 4699 4560 0 0 0.00% 0.00%
D 4698 4558 45 45 0.96% 0.99%

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 14 235 853094 7666.11 549 536 111.2
A 6 16 64539 575.51 549 536 111.2
A 8 192 22548 197.93 549 536 111.2
B 0 189 4522156 45831.12 507 493 98.7
B 5 172 22084 218.84 507 493 98.7
B 12 111 11658 113.17 507 493 98.7
C 14 238 85667 660.32 548 550 128.9
C 15 208 10929 80.52 548 550 128.9
C 2 16 9894 72.49 548 550 128.9
D 1 52 242923 1813.51 554 537 133.7
D 2 250 144823 1079.54 554 537 133.7
D 12 233 36664 270.3 554 537 133.7

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