ASTROSAT CZTI

Data Quality Report

Orbit 00795

Creation date: 2024-06-27T14:03:01.762998
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/AS1P01_010T01_9000000112_00795cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00795cztM0_level2_quad_clean.evt
Size (bytes)973,457,28099,973,440
Size928.4 MB 95.3 MB
Events in quadrant A7,381,199660,835
Events in quadrant B7,746,185672,026
Events in quadrant C6,989,094642,171
Events in quadrant D6,953,251619,992

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263090
B0274270
C0252100
D0251130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6198190.306551%
B6197200.322737%
C6197220.355010%
D6197380.613200%

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 7493 6199 254 254 3.39% 4.10%
B 7492 6198 233 233 3.11% 3.76%
C 7492 6198 130 130 1.74% 2.10%
D 7492 6198 194 194 2.59% 3.13%

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 12 243 201364 448.55 1854 1868 444.8
A 15 233 39299 84.16 1854 1868 444.8
A 10 133 16598 33.12 1854 1868 444.8
B 0 220 91898 196.74 1956 1962 457.1
B 0 23 72937 155.26 1956 1962 457.1
B 5 191 40173 83.59 1956 1962 457.1
C 9 52 88373 181.13 1739 1796 478.0
C 15 241 47993 96.65 1739 1796 478.0
C 3 111 27746 54.29 1739 1796 478.0
D 1 4 227545 438.45 1669 1722 515.0
D 13 25 218520 420.93 1669 1722 515.0
D 13 164 139431 267.37 1669 1722 515.0

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