ASTROSAT CZTI

Data Quality Report

Orbit 20230226_A12_004T01_9000005520_level2

Creation date: 2023-03-02T12:37:00.851127
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/AS1A12_004T01_9000005520cztM0_level2.fits modeM0/AS1A12_004T01_9000005520cztM0_level2_quad_clean.evt
Size (bytes)1,833,307,2002,061,587,520
Size1.7 GB 1.9 GB
Events in quadrant A11,218,23813,247,482
Events in quadrant B10,916,69613,517,261
Events in quadrant C9,439,5889,727,002
Events in quadrant D9,375,31611,406,923

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04725120
B04516780
C09205890
D05999900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08210
B08210
C08210
D08210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043260
B043260
C043260
D043260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21230622271.048958%
B21230615540.731962%
C2123035594326.350546%
D212305132726.251384%

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 293646 212275 0 0 0.00% 0.00%
B 293647 212293 0 0 0.00% 0.00%
C 293645 211172 0 0 0.00% 0.00%
D 293646 211664 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 0 29 9253 9.0 2929 2741 723.7
A 7 110 9221 8.95 2929 2741 723.7
A 9 19 9203 8.93 2929 2741 723.7
B 2 9 9565 12.22 2891 2755 557.3
B 2 8 7694 8.86 2891 2755 557.3
B 5 128 7641 8.77 2891 2755 557.3
C 1 81 7692 8.29 2497 2334 646.4
C 1 80 7385 7.81 2497 2334 646.4
C 3 202 7381 7.81 2497 2334 646.4
D 7 3 6954 6.3 2684 2446 716.0
D 4 160 6916 6.24 2684 2446 716.0
D 10 189 6717 5.97 2684 2446 716.0

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