ASTROSAT CZTI

Data Quality Report

Orbit 36606

Creation date: 2024-06-27T21:29:03.767046
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/AS1A11_097T24_9000005224_36606cztM0_level2.evt modeM0/AS1A11_097T24_9000005224_36606cztM0_level2_quad_clean.evt
Size (bytes)462,435,84070,211,520
Size441.0 MB 67.0 MB
Events in quadrant A2,812,115451,614
Events in quadrant B3,032,171456,648
Events in quadrant C3,507,133418,388
Events in quadrant D4,282,233416,364

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115703
B0124462
C0138122
D0164482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A547580.146119%
B5475551.004566%
C54751993.634703%
D54752905.296804%

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 7328 5476 1 1 0.01% 0.02%
B 7328 5476 34 34 0.46% 0.62%
C 7328 5476 151 151 2.06% 2.76%
D 7328 5476 236 236 3.22% 4.31%

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 200658 1518.48 660 651 131.7
A 9 143 27974 207.44 660 651 131.7
A 15 223 18388 134.66 660 651 131.7
B 0 213 283922 2274.05 651 636 124.6
B 5 255 105155 839.02 651 636 124.6
B 4 171 20664 160.77 651 636 124.6
C 0 10 425140 2980.25 616 620 142.4
C 0 207 346798 2430.27 616 620 142.4
C 15 214 232720 1629.41 616 620 142.4
D 12 235 1075582 7104.03 621 602 151.3
D 2 250 329561 2173.93 621 602 151.3
D 13 249 137470 904.5 621 602 151.3

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