ASTROSAT CZTI

Data Quality Report

Orbit 20230128_A12_051T01_9000005490_level2

Creation date: 2023-01-31T14:37:22.823412
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_051T01_9000005490cztM0_level2.fits modeM0/AS1A12_051T01_9000005490cztM0_level2_quad_clean.evt
Size (bytes)1,271,269,4401,304,596,800
Size1.2 GB 1.2 GB
Events in quadrant A6,672,3605,680,066
Events in quadrant B7,690,0568,731,480
Events in quadrant C7,323,8647,496,903
Events in quadrant D6,812,0707,631,744

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05880
B05880
C05880
D05890

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07585300
B03256000
C05394820
D03637130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029740
B029740
C029740
D029740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1454655350236.779981%
B14546519541.343278%
C1454651835012.614718%
D14546541842.876293%

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 214195 145188 0 0 0.00% 0.00%
B 214195 145429 0 0 0.00% 0.00%
C 214195 145359 0 0 0.00% 0.00%
D 214196 145396 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 5562 9.14 1743 1636 429.4
A 7 110 5443 8.87 1743 1636 429.4
A 9 19 5382 8.72 1743 1636 429.4
B 2 9 6586 11.83 2039 1950 392.0
B 3 80 5699 9.56 2039 1950 392.0
B 2 8 5352 8.68 2039 1950 392.0
C 1 81 6069 8.59 1937 1820 494.9
C 1 80 5826 8.1 1937 1820 494.9
C 3 202 5747 7.94 1937 1820 494.9
D 7 3 5015 6.16 1950 1778 525.6
D 3 14 4960 6.05 1950 1778 525.6
D 4 160 4950 6.03 1950 1778 525.6

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