ASTROSAT CZTI

Data Quality Report

Orbit 36839

Creation date: 2024-06-27T21:32:13.663732
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/AS1A11_075T01_9000005244_36839cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36839cztM0_level2_quad_clean.evt
Size (bytes)581,872,32092,998,080
Size554.9 MB 88.7 MB
Events in quadrant A2,601,041635,773
Events in quadrant B8,916,582558,830
Events in quadrant C2,859,083652,219
Events in quadrant D2,902,522614,032

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109263
B0300152
C0115512
D0120252

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5055180.356083%
B5055241547.774481%
C5055881.740851%
D5055741.463897%

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 7058 5056 5 5 0.07% 0.10%
B 7058 5056 2271 2271 32.18% 44.92%
C 7058 5056 68 68 0.96% 1.34%
D 7058 5056 75 75 1.06% 1.48%

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 10 83 223009 1814.3 604 595 122.6
A 9 143 17351 136.68 604 595 122.6
A 13 6 15386 120.65 604 595 122.6
B 12 1 6149640 59620.57 554 542 103.1
B 5 255 217814 2106.63 554 542 103.1
B 0 221 98009 945.02 554 542 103.1
C 0 10 249021 1807.46 599 605 137.4
C 15 214 230084 1669.68 599 605 137.4
C 14 254 37067 265.3 599 605 137.4
D 12 217 115127 797.04 594 578 143.7
D 12 17 96755 669.21 594 578 143.7
D 2 250 69036 476.34 594 578 143.7

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