ASTROSAT CZTI

Data Quality Report

Orbit 12558

Creation date: 2024-06-27T16:29:11.815486
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/AS1C03_021T01_9000001864_12558cztM0_level2.evt modeM0/AS1C03_021T01_9000001864_12558cztM0_level2_quad_clean.evt
Size (bytes)958,055,040147,574,080
Size913.7 MB 140.7 MB
Events in quadrant A6,411,148891,835
Events in quadrant B8,018,740896,464
Events in quadrant C6,146,994899,175
Events in quadrant D7,535,636860,445

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277844
B0324573
C0273413
D0315793

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133361561.169766%
B133365704.274145%
C133361070.802340%
D133362692.017097%

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 15612 13338 3 3 0.02% 0.02%
B 15612 13338 322 322 2.06% 2.41%
C 15612 13338 3 3 0.02% 0.02%
D 15612 13338 148 148 0.95% 1.11%

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 1 162 72423 214.35 1606 1569 330.6
A 9 143 39284 114.1 1606 1569 330.6
A 1 178 37648 109.15 1606 1569 330.6
B 4 239 1446499 4728.32 1589 1546 305.6
B 3 64 74845 239.86 1589 1546 305.6
B 11 51 72467 232.07 1589 1546 305.6
C 14 234 16147 40.01 1572 1580 364.1
C 13 61 11679 27.74 1572 1580 364.1
C 3 202 4022 6.71 1572 1580 364.1
D 1 52 869704 2319.8 1559 1516 374.3
D 13 104 367888 978.95 1559 1516 374.3
D 11 176 176663 467.99 1559 1516 374.3

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