ASTROSAT CZTI

Data Quality Report

Orbit 25194

Creation date: 2024-06-27T19:14:55.869237
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/AS1A07_027T01_9000003690_25194cztM0_level2.evt modeM0/AS1A07_027T01_9000003690_25194cztM0_level2_quad_clean.evt
Size (bytes)888,750,720172,762,560
Size847.6 MB 164.8 MB
Events in quadrant A5,874,5031,102,973
Events in quadrant B6,710,3541,115,002
Events in quadrant C6,106,5281,079,990
Events in quadrant D7,367,8641,059,776

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256640
B0281730
C0259570
D0299670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12658690.545110%
B126593102.448851%
C126591591.256023%
D126591581.248124%

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 14013 12660 0 0 0.00% 0.00%
B 14014 12661 122 122 0.87% 0.96%
C 14014 12661 4 4 0.03% 0.03%
D 14014 12661 91 91 0.65% 0.72%

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 13 254 18956 57.47 1521 1489 304.0
A 3 137 14400 42.48 1521 1489 304.0
A 0 226 12929 37.64 1521 1489 304.0
B 3 64 684083 2397.75 1497 1458 284.7
B 4 80 56206 192.3 1497 1458 284.7
B 0 190 44906 152.61 1497 1458 284.7
C 14 238 232613 674.66 1467 1476 342.6
C 8 208 73305 209.66 1467 1476 342.6
C 7 247 51365 145.62 1467 1476 342.6
D 8 195 906611 2514.04 1494 1452 360.0
D 12 235 447608 1239.18 1494 1452 360.0
D 2 244 203498 561.17 1494 1452 360.0

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