ASTROSAT CZTI

Data Quality Report

Orbit 13875

Creation date: 2024-06-27T16:47:29.004052
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/AS1G08_030T01_9000002044_13875cztM0_level2.evt modeM0/AS1G08_030T01_9000002044_13875cztM0_level2_quad_clean.evt
Size (bytes)500,065,92072,380,160
Size476.9 MB 69.0 MB
Events in quadrant A3,334,125431,151
Events in quadrant B3,583,281421,716
Events in quadrant C3,226,350437,712
Events in quadrant D4,536,986425,018

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141263
B0148852
C0139652
D0178752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6825911.333333%
B68251221.787546%
C6825680.996337%
D68253805.567766%

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 7686 6826 1 1 0.01% 0.01%
B 7686 6826 26 26 0.34% 0.38%
C 7686 6826 0 0 0.00% 0.00%
D 7686 6826 241 241 3.14% 3.53%

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 4 2 31186 176.94 845 827 171.6
A 0 23 21730 121.83 845 827 171.6
A 1 162 17519 97.28 845 827 171.6
B 10 245 139387 859.44 835 813 161.2
B 3 209 46315 282.21 835 813 161.2
B 0 230 44467 270.74 835 813 161.2
C 3 233 30114 152.45 820 826 192.1
C 13 61 5940 26.62 820 826 192.1
C 14 234 2056 6.4 820 826 192.1
D 13 122 701644 3524.74 803 782 198.8
D 5 222 437990 2198.79 803 782 198.8
D 10 157 121919 609.22 803 782 198.8

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