ASTROSAT CZTI

Data Quality Report

Orbit 42477

Creation date: 2024-06-27T22:40:39.207031
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/AS1C07_001T10_9000005806_42477cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42477cztM0_level2_quad_clean.evt
Size (bytes)315,576,00088,004,160
Size301.0 MB 83.9 MB
Events in quadrant A3,144,443596,897
Events in quadrant B2,421,462593,292
Events in quadrant C2,526,966567,596
Events in quadrant D3,170,179530,836

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126022
B0110862
C0110352
D0132462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5368200.372578%
B5368200.372578%
C536890.167660%
D53671482.757593%

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 7280 5369 6 6 0.08% 0.11%
B 7280 5369 9 9 0.12% 0.17%
C 7280 5369 6 6 0.08% 0.11%
D 7279 5368 126 126 1.73% 2.35%

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 10 83 618501 5321.2 565 554 116.1
A 12 189 281375 2418.18 565 554 116.1
A 13 248 20469 171.49 565 554 116.1
B 0 186 68755 632.78 557 541 107.8
B 15 35 42355 387.88 557 541 107.8
B 5 172 38452 351.68 557 541 107.8
C 15 214 225918 1762.51 551 552 127.9
C 14 254 71017 551.08 551 552 127.9
C 0 239 61443 476.21 551 552 127.9
D 1 52 356898 2650.63 553 538 134.4
D 10 118 300320 2229.8 553 538 134.4
D 9 19 55861 411.5 553 538 134.4

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