ASTROSAT CZTI

Data Quality Report

Orbit 22988

Creation date: 2024-06-27T18:48:20.274721
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_047T09_9000003396_22988cztM0_level2.evt modeM0/AS1A07_047T09_9000003396_22988cztM0_level2_quad_clean.evt
Size (bytes)338,437,44073,330,560
Size322.8 MB 69.9 MB
Events in quadrant A2,297,220479,350
Events in quadrant B2,401,094489,418
Events in quadrant C2,262,800472,171
Events in quadrant D2,971,562452,906

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097191
B098641
C095231
D0118351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4654160.343790%
B4654270.580146%
C4654471.009884%
D4654952.041255%

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 4654 4654 5 5 0.11% 0.11%
B 4654 4654 2 2 0.04% 0.04%
C 4654 4654 1 1 0.02% 0.02%
D 4654 4654 66 66 1.42% 1.42%

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 14 237 56981 498.66 569 559 113.1
A 4 2 43231 377.14 569 559 113.1
A 13 254 7976 65.55 569 559 113.1
B 0 190 74942 701.57 570 559 106.0
B 0 189 35466 329.24 570 559 106.0
B 3 209 31752 294.21 570 559 106.0
C 14 238 89561 697.02 550 554 127.7
C 0 10 18747 142.47 550 554 127.7
C 13 61 3824 25.61 550 554 127.7
D 1 52 379619 2844.1 553 539 133.3
D 13 153 144398 1079.32 553 539 133.3
D 13 249 69162 514.85 553 539 133.3

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