ASTROSAT CZTI

Data Quality Report

Orbit 24199

Creation date: 2024-06-27T19:03:22.526568
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_160T05_9000003580_24199cztM0_level2.evt modeM0/AS1A07_160T05_9000003580_24199cztM0_level2_quad_clean.evt
Size (bytes)330,269,76071,101,440
Size315.0 MB 67.8 MB
Events in quadrant A2,358,326461,691
Events in quadrant B2,398,500471,587
Events in quadrant C2,568,498439,172
Events in quadrant D2,336,445430,194

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102721
B0103561
C0110301
D0105421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4995140.280280%
B4995260.520521%
C4995521.041041%
D4995210.420420%

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 6205 4996 0 0 0.00% 0.00%
B 6205 4996 0 0 0.00% 0.00%
C 6205 4996 0 0 0.00% 0.00%
D 6205 4996 2 2 0.03% 0.04%

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 13 254 7831 59.35 612 599 121.8
A 0 226 5340 38.91 612 599 121.8
A 3 137 5252 38.19 612 599 121.8
B 12 111 13775 114.64 611 597 114.9
B 11 111 12362 102.35 611 597 114.9
B 14 111 10991 90.42 611 597 114.9
C 7 247 175301 1279.14 585 590 136.6
C 14 238 93345 679.1 585 590 136.6
C 3 233 11629 80.82 585 590 136.6
D 8 195 75674 525.01 587 569 143.1
D 2 234 19460 132.05 587 569 143.1
D 12 218 16282 109.84 587 569 143.1

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