ASTROSAT CZTI

Data Quality Report

Orbit 39239

Creation date: 2024-06-27T22:02:10.788885
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_095T01_9000005450_39239cztM0_level2.fits modeM0/AS1A12_095T01_9000005450_39239cztM0_level2_quad_clean.evt
Size (bytes)588,772,80083,525,760
Size561.5 MB 79.7 MB
Events in quadrant A3,663,641613,396
Events in quadrant B2,808,473647,115
Events in quadrant C2,571,598615,154
Events in quadrant D12,310,570257,386

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145563
B0123972
C0114612
D0404072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56642544.484463%
B5664631.112288%
C566450.088277%
D5664347461.334746%

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 7307 5665 197 197 2.70% 3.48%
B 7307 5665 27 27 0.37% 0.48%
C 7307 5665 0 0 0.00% 0.00%
D 7307 5665 3623 3623 49.58% 63.95%

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 13 248 888602 7221.93 603 592 123.0
A 10 83 430961 3500.07 603 592 123.0
A 10 255 11191 86.2 603 592 123.0
B 5 172 227381 1934.38 608 591 117.2
B 5 255 112712 956.32 608 591 117.2
B 0 190 32414 271.43 608 591 117.2
C 15 214 236427 1704.1 594 597 138.4
C 3 233 8495 57.07 594 597 138.4
C 0 10 5921 38.47 594 597 138.4
D 12 235 10344719 95396.5 439 427 108.4
D 12 233 56456 516.71 439 427 108.4
D 12 227 53534 489.76 439 427 108.4

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