ASTROSAT CZTI

Data Quality Report

Orbit 22757

Creation date: 2024-06-27T18:45:31.450541
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/AS1C05_013T02_9000003364_22757cztM0_level2.evt modeM0/AS1C05_013T02_9000003364_22757cztM0_level2_quad_clean.evt
Size (bytes)411,984,000101,741,760
Size392.9 MB 97.0 MB
Events in quadrant A2,425,752715,928
Events in quadrant B2,472,681712,688
Events in quadrant C2,441,016683,905
Events in quadrant D4,781,930602,579

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106270
B0106810
C0106020
D0177070

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5224490.937979%
B5225420.803828%
C5225731.397129%
D522599619.062201%

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 5224 5224 0 0 0.00% 0.00%
B 5225 5225 0 0 0.00% 0.00%
C 5225 5225 0 0 0.00% 0.00%
D 5225 5225 913 913 17.47% 17.47%

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 13 252 10964 82.75 626 612 125.1
A 13 254 8641 64.18 626 612 125.1
A 0 226 5585 39.75 626 612 125.1
B 0 228 19982 168.01 620 605 115.3
B 0 230 19868 167.02 620 605 115.3
B 12 111 13477 111.61 620 605 115.3
C 14 238 95559 678.9 599 602 139.9
C 10 22 7373 48.41 599 602 139.9
C 13 61 4245 26.05 599 602 139.9
D 7 238 2049515 15364.77 552 535 133.4
D 1 52 351085 2628.68 552 535 133.4
D 12 233 149465 1116.79 552 535 133.4

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