ASTROSAT CZTI

Data Quality Report

Orbit 23675

Creation date: 2024-06-27T18:57:26.086608
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/AS1A08_004T02_9000003496_23675cztM0_level2.evt modeM0/AS1A08_004T02_9000003496_23675cztM0_level2_quad_clean.evt
Size (bytes)2,023,067,520397,592,640
Size1.9 GB 379.2 MB
Events in quadrant A12,510,7022,608,837
Events in quadrant B16,744,0272,597,606
Events in quadrant C12,846,2552,568,148
Events in quadrant D17,357,1162,423,734

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0549905
B0665385
C0554725
D0691145

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05420
B05420
C05420
D05420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A268274281.595408%
B2682715695.848585%
C268276012.240280%
D2682714185.285720%

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 29177 26828 5 5 0.02% 0.02%
B 29177 26827 843 843 2.89% 3.14%
C 29177 26828 4 4 0.01% 0.01%
D 29177 26828 1080 1080 3.70% 4.03%

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 96 72010 107.15 3224 3152 642.7
A 13 254 47797 69.47 3224 3152 642.7
A 3 137 27657 38.13 3224 3152 642.7
B 3 64 3519857 5928.95 3166 3087 593.2
B 0 189 388405 649.61 3166 3087 593.2
B 0 230 113319 185.84 3166 3087 593.2
C 14 238 495754 690.84 3103 3121 713.1
C 7 247 153195 210.45 3103 3121 713.1
C 10 9 41918 54.41 3103 3121 713.1
D 1 52 3506837 4725.32 3087 2994 741.5
D 12 233 867360 1165.69 3087 2994 741.5
D 12 235 380668 509.34 3087 2994 741.5

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