ASTROSAT CZTI

Data Quality Report

Orbit 38496

Creation date: 2024-06-27T21:53:33.726123
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/AS1A12_018T01_9000005386_38496cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38496cztM0_level2_quad_clean.evt
Size (bytes)384,664,32097,882,560
Size366.8 MB 93.3 MB
Events in quadrant A3,952,954661,763
Events in quadrant B3,307,117666,777
Events in quadrant C2,847,576640,937
Events in quadrant D3,672,959582,368

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159433
B0138332
C0121492
D0151362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5894330.559891%
B5894921.560909%
C5894100.169664%
D58942083.529013%

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 7206 5895 18 18 0.25% 0.31%
B 7206 5895 55 55 0.76% 0.93%
C 7206 5895 9 9 0.12% 0.15%
D 7206 5895 175 175 2.43% 2.97%

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 15 222 866600 6530.55 653 640 132.6
A 10 83 421365 3172.86 653 640 132.6
A 9 143 75777 566.64 653 640 132.6
B 5 184 177294 1408.0 649 632 125.5
B 0 229 125453 994.83 649 632 125.5
B 4 171 104909 831.09 649 632 125.5
C 15 214 244379 1610.43 641 644 151.3
C 14 254 55445 362.09 641 644 151.3
C 1 23 19532 124.8 641 644 151.3
D 12 227 390960 2528.28 633 615 154.4
D 13 249 335203 2167.14 633 615 154.4
D 2 250 174096 1123.64 633 615 154.4

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