ASTROSAT CZTI

Data Quality Report

Orbit 25571

Creation date: 2024-06-27T19:19:08.450836
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/AS1A09_043T02_9000003726_25571cztM0_level2.evt modeM0/AS1A09_043T02_9000003726_25571cztM0_level2_quad_clean.evt
Size (bytes)1,361,957,760224,870,400
Size1.3 GB 214.5 MB
Events in quadrant A8,726,8701,440,867
Events in quadrant B9,057,5921,446,093
Events in quadrant C8,461,4071,375,811
Events in quadrant D13,799,6091,320,459

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0373150
B0380110
C0366270
D0533460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17806890.499832%
B178071510.847981%
C178071550.870444%
D178064922.763114%

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 19987 17810 0 0 0.00% 0.00%
B 19988 17811 11 11 0.06% 0.06%
C 19988 17811 3 3 0.02% 0.02%
D 19987 17810 280 280 1.40% 1.57%

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 17 314122 716.19 2160 2113 435.6
A 6 16 79088 176.69 2160 2113 435.6
A 13 254 31682 67.87 2160 2113 435.6
B 0 219 256723 622.18 2147 2092 409.3
B 0 190 135792 326.69 2147 2092 409.3
B 15 33 67519 159.87 2147 2092 409.3
C 14 238 325089 668.23 2060 2076 483.4
C 3 233 49386 97.87 2060 2076 483.4
C 0 207 46983 92.9 2060 2076 483.4
D 8 195 3340227 6571.73 2073 2015 508.0
D 1 52 2367538 4656.86 2073 2015 508.0
D 10 33 94136 181.35 2073 2015 508.0

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