ASTROSAT CZTI

Data Quality Report

Orbit 29278

Creation date: 2024-06-27T20:02:10.024833
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/AS1A10_045T08_9000004208_29278cztM0_level2.evt modeM0/AS1A10_045T08_9000004208_29278cztM0_level2_quad_clean.evt
Size (bytes)1,755,662,400232,606,080
Size1.6 GB 221.8 MB
Events in quadrant A9,063,2541,457,703
Events in quadrant B10,546,3581,489,237
Events in quadrant C14,024,1071,385,173
Events in quadrant D18,254,1351,399,185

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391094
B0438914
C0553324
D0675474

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A190571160.608700%
B190573591.883822%
C1905813597.130864%
D1905713387.021042%

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 22062 19061 0 0 0.00% 0.00%
B 22062 19061 66 66 0.30% 0.35%
C 22063 19062 16 16 0.07% 0.08%
D 22062 19060 945 945 4.28% 4.96%

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 13 254 35590 70.72 2347 2300 470.7
A 3 137 23477 44.99 2347 2300 470.7
A 0 226 19661 36.88 2347 2300 470.7
B 0 229 714307 1609.7 2318 2256 442.4
B 10 245 286790 643.23 2318 2256 442.4
B 0 183 275384 617.45 2318 2256 442.4
C 3 233 4376352 8541.83 2196 2209 512.1
C 14 238 590977 1149.75 2196 2209 512.1
C 14 254 346090 671.53 2196 2209 512.1
D 7 80 3827734 6605.2 2212 2171 579.2
D 8 195 2768686 4776.65 2212 2171 579.2
D 1 52 2073196 3575.82 2212 2171 579.2

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