ASTROSAT CZTI

Data Quality Report

Orbit 21724

Creation date: 2024-06-27T18:31:36.753066
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/AS1A07_059T01_9000003218_21724cztM0_level2.evt modeM0/AS1A07_059T01_9000003218_21724cztM0_level2_quad_clean.evt
Size (bytes)210,890,88043,920,000
Size201.1 MB 41.9 MB
Events in quadrant A1,620,455288,201
Events in quadrant B1,286,687303,799
Events in quadrant C1,252,261293,492
Events in quadrant D2,066,650275,536

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064021
B053291
C052221
D078381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23352058.779443%
B2336371.583904%
C2336461.969178%
D2336713.039384%

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 3420 2336 158 158 4.62% 6.76%
B 3421 2337 2 2 0.06% 0.09%
C 3421 2337 0 0 0.00% 0.00%
D 3421 2337 39 39 1.14% 1.67%

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 497525 8354.28 291 285 59.5
A 13 254 3817 59.34 291 285 59.5
A 0 226 2510 37.38 291 285 59.5
B 6 36 25349 422.76 309 302 59.2
B 0 197 20497 340.87 309 302 59.2
B 0 230 15391 254.69 309 302 59.2
C 14 238 48914 667.87 306 308 72.8
C 10 23 8813 116.86 306 308 72.8
C 13 61 2143 25.21 306 308 72.8
D 1 52 563176 7576.62 304 295 74.3
D 12 235 298259 4010.72 304 295 74.3
D 14 35 12493 164.19 304 295 74.3

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