ASTROSAT CZTI

Data Quality Report

Orbit 42831

Creation date: 2024-06-27T22:44:46.118704
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/AS1T05_138T01_9000005828_42831cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42831cztM0_level2_quad_clean.evt
Size (bytes)357,609,60091,578,240
Size341.0 MB 87.3 MB
Events in quadrant A3,178,165599,427
Events in quadrant B2,510,473615,615
Events in quadrant C2,854,873622,904
Events in quadrant D4,266,104549,696

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127521
B0112761
C0118761
D0164981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5497280.509369%
B5498170.309203%
C5498370.672972%
D54982815.110949%

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 7080 5498 3 3 0.04% 0.05%
B 7081 5499 7 7 0.10% 0.13%
C 7081 5499 26 26 0.37% 0.47%
D 7081 5499 251 251 3.54% 4.56%

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 568772 4534.96 606 594 125.3
A 12 189 162736 1294.15 606 594 125.3
A 15 222 50935 401.8 606 594 125.3
B 5 255 33835 283.46 603 586 117.3
B 3 112 27818 232.17 603 586 117.3
B 5 172 25411 211.64 603 586 117.3
C 14 254 240765 1688.73 598 601 142.2
C 15 214 224236 1572.51 598 601 142.2
C 3 233 26274 180.52 598 601 142.2
D 1 52 974721 6678.45 588 571 145.9
D 12 233 363620 2488.94 588 571 145.9
D 12 17 322589 2207.65 588 571 145.9

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