ASTROSAT CZTI

Data Quality Report

Orbit 26207

Creation date: 2024-06-27T19:26:06.859329
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_019T04_9000003788_26207cztM0_level2.evt modeM0/AS1C05_019T04_9000003788_26207cztM0_level2_quad_clean.evt
Size (bytes)915,868,800238,155,840
Size873.4 MB 227.1 MB
Events in quadrant A6,713,9791,605,223
Events in quadrant B6,288,0481,623,891
Events in quadrant C6,112,2711,562,379
Events in quadrant D7,764,1831,545,143

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284940
B0269780
C0262280
D0318780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126961831.441399%
B126971491.173506%
C126961260.992439%
D126963903.071834%

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 13921 12698 88 88 0.63% 0.69%
B 13922 12699 83 83 0.60% 0.65%
C 13921 12698 11 11 0.08% 0.09%
D 13921 12698 332 332 2.38% 2.61%

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 0 13 924526 3066.57 1500 1466 301.0
A 13 254 21330 65.99 1500 1466 301.0
A 3 137 13485 39.93 1500 1466 301.0
B 5 172 359507 1273.7 1492 1452 281.1
B 0 190 48417 167.07 1492 1452 281.1
B 12 111 33823 115.15 1492 1452 281.1
C 14 238 230496 677.69 1447 1451 338.0
C 3 233 140410 411.14 1447 1451 338.0
C 2 16 83775 243.58 1447 1451 338.0
D 1 52 1399496 3879.81 1453 1417 360.3
D 12 233 771725 2137.68 1453 1417 360.3
D 2 234 58388 158.1 1453 1417 360.3

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