ASTROSAT CZTI

Data Quality Report

Orbit 24948

Creation date: 2024-06-27T19:11:48.854742
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/AS1T03_200T01_9000003654_24948cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24948cztM0_level2_quad_clean.evt
Size (bytes)891,809,280229,504,320
Size850.5 MB 218.9 MB
Events in quadrant A5,647,4801,560,631
Events in quadrant B6,757,7521,567,715
Events in quadrant C6,619,5431,495,160
Events in quadrant D7,143,8861,470,083

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251942
B0283622
C0276082
D0294472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12415600.483286%
B124152101.691502%
C124152301.852598%
D12415990.797422%

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 13790 12417 0 0 0.00% 0.00%
B 13790 12417 82 82 0.59% 0.66%
C 13790 12417 52 52 0.38% 0.42%
D 13790 12417 11 11 0.08% 0.09%

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 21213 67.1 1461 1429 294.9
A 3 137 13035 39.36 1461 1429 294.9
A 0 226 12542 37.69 1461 1429 294.9
B 15 33 348269 1271.71 1450 1413 272.7
B 3 64 293685 1071.58 1450 1413 272.7
B 4 80 185548 675.11 1450 1413 272.7
C 7 247 917105 2799.18 1400 1408 327.1
C 14 238 222042 674.45 1400 1408 327.1
C 3 233 11010 29.35 1400 1408 327.1
D 1 3 1043432 3037.9 1423 1381 343.0
D 8 195 316821 919.6 1423 1381 343.0
D 1 52 243365 705.46 1423 1381 343.0

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