ASTROSAT CZTI

Data Quality Report

Orbit 07914

Creation date: 2024-06-27T15:25:29.027848
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/AS1A02_027T01_9000001084_07914cztM0_level2.evt modeM0/AS1A02_027T01_9000001084_07914cztM0_level2_quad_clean.evt
Size (bytes)946,785,600153,164,160
Size902.9 MB 146.1 MB
Events in quadrant A5,714,518942,526
Events in quadrant B5,879,626966,527
Events in quadrant C10,224,520967,858
Events in quadrant D6,048,773936,939

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02440
B02440
C02440
D02440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251744
B0254433
C0388093
D0261893

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11925910.763103%
B119251201.006289%
C119257145.987421%
D119251541.291405%

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 14075 11927 4 4 0.03% 0.03%
B 14075 11927 10 10 0.07% 0.08%
C 14075 11927 356 356 2.53% 2.98%
D 14075 11927 70 70 0.50% 0.59%

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 15 234 120841 415.01 1426 1394 287.8
A 15 239 76892 262.31 1426 1394 287.8
A 0 226 13544 42.21 1426 1394 287.8
B 4 239 117550 426.73 1444 1412 272.2
B 5 255 82678 298.6 1444 1412 272.2
B 4 81 29481 103.14 1444 1412 272.2
C 1 16 4812839 15086.06 1386 1390 318.9
C 13 61 10630 28.97 1386 1390 318.9
C 14 67 4656 10.24 1386 1390 318.9
D 1 52 424298 1239.63 1400 1356 341.2
D 5 233 112261 325.06 1400 1356 341.2
D 2 14 110064 318.62 1400 1356 341.2

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