ASTROSAT CZTI

Data Quality Report

Orbit 21049

Creation date: 2024-06-27T18:22:57.929475
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/AS1A05_025T04_9000003110_21049cztM0_level2.evt modeM0/AS1A05_025T04_9000003110_21049cztM0_level2_quad_clean.evt
Size (bytes)95,863,68028,310,400
Size91.4 MB 27.0 MB
Events in quadrant A688,214190,028
Events in quadrant B707,738194,990
Events in quadrant C720,090184,213
Events in quadrant D685,201179,597

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030291
B030601
C030501
D030651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1458291.989026%
B1458332.263374%
C1458483.292181%
D1458251.714678%

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 1458 1458 0 0 0.00% 0.00%
B 1458 1458 1 1 0.07% 0.07%
C 1458 1458 0 0 0.00% 0.00%
D 1458 1458 0 0 0.00% 0.00%

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 2366 57.53 178 173 38.1
A 3 137 1487 34.47 178 173 38.1
A 0 226 1416 32.61 178 173 38.1
B 3 64 4414 117.04 179 174 36.2
B 12 111 4283 113.42 179 174 36.2
B 11 111 3642 95.73 179 174 36.2
C 14 238 27210 626.39 177 178 43.2
C 13 61 1277 25.47 177 178 43.2
C 7 247 421 5.63 177 178 43.2
D 1 52 15117 336.12 177 171 44.5
D 2 234 4349 93.96 177 171 44.5
D 3 238 2403 50.2 177 171 44.5

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