ASTROSAT CZTI

Data Quality Report

Orbit 00706

Creation date: 2024-06-27T14:01:49.180280
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_141T01_9000000104_00706cztM0_level2.evt modeM0/AS1P01_141T01_9000000104_00706cztM0_level2_quad_clean.evt
Size (bytes)998,637,12082,307,520
Size952.4 MB 78.5 MB
Events in quadrant A6,734,336529,408
Events in quadrant B8,330,517528,730
Events in quadrant C7,829,095519,777
Events in quadrant D6,959,779502,925

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242751
B0289341
C0274251
D0249151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A588990.152827%
B5890991.680815%
C5890250.424448%
D5890591.001698%

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 6994 5890 128 128 1.83% 2.17%
B 6995 5891 631 631 9.02% 10.71%
C 6995 5891 196 196 2.80% 3.33%
D 6995 5891 279 279 3.99% 4.74%

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 15 171 20119 43.73 1747 1759 419.9
A 12 236 7463 13.59 1747 1759 419.9
A 11 79 7395 13.42 1747 1759 419.9
B 5 247 928910 2163.72 1833 1845 428.5
B 5 191 219634 508.31 1833 1845 428.5
B 8 38 68260 155.01 1833 1845 428.5
C 3 31 274862 586.5 1677 1743 465.7
C 3 15 231502 493.39 1677 1743 465.7
C 3 175 225530 480.56 1677 1743 465.7
D 0 25 394288 797.06 1602 1662 492.6
D 6 226 370478 748.73 1602 1662 492.6
D 1 4 105228 210.25 1602 1662 492.6

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