ASTROSAT CZTI

Data Quality Report

Orbit 38185

Creation date: 2024-06-27T21:49:28.921947
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_145T01_9000005370_38185cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38185cztM0_level2_quad_clean.evt
Size (bytes)324,106,56095,685,120
Size309.1 MB 91.3 MB
Events in quadrant A3,003,623647,156
Events in quadrant B2,571,014671,729
Events in quadrant C3,026,163632,388
Events in quadrant D2,993,127583,746

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122063
B0108682
C0120272
D0121652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5180260.501931%
B5180290.559846%
C51801212.335907%
D51801052.027027%

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 7122 5181 19 19 0.27% 0.37%
B 7122 5181 18 18 0.25% 0.35%
C 7122 5181 118 118 1.66% 2.28%
D 7122 5181 101 101 1.42% 1.95%

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 365148 2972.68 609 597 122.6
A 12 189 184023 1495.72 609 597 122.6
A 9 143 88922 720.23 609 597 122.6
B 4 171 52544 444.62 616 600 116.8
B 0 229 28870 241.98 616 600 116.8
B 0 230 21156 175.95 616 600 116.8
C 14 254 353744 2508.52 602 607 140.8
C 15 214 216264 1531.93 602 607 140.8
C 0 10 59350 417.28 602 607 140.8
D 13 138 151736 1041.74 598 581 145.1
D 13 249 130686 896.67 598 581 145.1
D 2 249 63516 433.74 598 581 145.1

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