ASTROSAT CZTI

Data Quality Report

Orbit 21257

Creation date: 2024-06-27T18:25:31.543889
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/AS1A05_037T01_9000003140_21257cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21257cztM0_level2_quad_clean.evt
Size (bytes)1,467,146,880227,332,800
Size1.4 GB 216.8 MB
Events in quadrant A10,007,4191,401,058
Events in quadrant B9,319,0091,433,278
Events in quadrant C9,207,0421,404,690
Events in quadrant D14,607,1081,327,613

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0416915
B0396004
C0394384
D0563674

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191322461.285804%
B191322131.113318%
C191322561.338072%
D1913212826.700815%

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 21323 19133 60 60 0.28% 0.31%
B 21323 19133 7 7 0.03% 0.04%
C 21323 19134 14 14 0.07% 0.07%
D 21323 19133 984 984 4.61% 5.14%

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 15 236 452189 968.5 2316 2264 464.6
A 12 96 407390 872.06 2316 2264 464.6
A 3 247 125544 265.37 2316 2264 464.6
B 0 230 66011 142.82 2322 2266 446.3
B 12 111 54548 117.13 2322 2266 446.3
B 11 111 47042 100.32 2322 2266 446.3
C 14 238 347671 662.74 2229 2244 521.2
C 0 207 101484 190.4 2229 2244 521.2
C 3 233 35732 64.25 2229 2244 521.2
D 1 52 2429216 4502.63 2196 2136 539.0
D 13 174 1649361 3055.87 2196 2136 539.0
D 2 16 618939 1144.27 2196 2136 539.0

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