ASTROSAT CZTI

Data Quality Report

Orbit 34251

Creation date: 2022-07-18T14:50:37.155070
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/AS1A11_059T09_9000004888_34251cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34251cztM0_level2_quad_clean.evt
Size (bytes)443,056,32080,524,800
Size422.5 MB 76.8 MB
Events in quadrant A2,336,533534,768
Events in quadrant B3,223,667543,808
Events in quadrant C3,448,087508,650
Events in quadrant D4,062,277492,567

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103960
B0129490
C0134290
D0156450

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A511750.097714%
B51171613.146375%
C51172895.647841%
D51174368.520618%

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 7090 5118 0 0 0.00% 0.00%
B 7090 5118 82 82 1.16% 1.60%
C 7090 5118 195 195 2.75% 3.81%
D 7090 5118 351 351 4.95% 6.86%

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 7 16 27369 226.87 588 578 118.1
A 10 83 22995 189.83 588 578 118.1
A 15 47 11979 96.54 588 578 118.1
B 0 189 399267 3554.64 584 568 112.2
B 5 172 390380 3475.41 584 568 112.2
B 0 229 78680 696.42 584 568 112.2
C 14 254 383235 2990.42 549 554 128.0
C 0 10 351036 2738.81 549 554 128.0
C 0 207 315475 2460.92 549 554 128.0
D 12 227 546449 4015.11 548 533 136.0
D 8 195 515792 3789.64 548 533 136.0
D 7 80 483996 3555.78 548 533 136.0

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