ASTROSAT CZTI

Data Quality Report

Orbit 34860

Creation date: 2022-03-10T13:06:57.477452
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/AS1C07_005T01_9000004992_34860cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34860cztM0_level2_quad_clean.evt
Size (bytes)1,079,406,72082,157,760
Size1.0 GB 78.4 MB
Events in quadrant A9,809,563566,711
Events in quadrant B14,107,580236,030
Events in quadrant C4,369,189653,455
Events in quadrant D4,039,905647,604

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0328753
B0456062
C0162342
D0156542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5431254546.860615%
B5431537999.042534%
C54315239.629902%
D54312073.811453%

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 7074 5432 2182 2182 30.85% 40.17%
B 7073 5430 5255 5255 74.30% 96.78%
C 7074 5432 500 500 7.07% 9.20%
D 7074 5432 191 191 2.70% 3.52%

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 15 169 7579680 69460.15 541 531 109.1
A 15 237 76647 697.58 541 531 109.1
A 10 83 41384 374.4 541 531 109.1
B 5 31 5259321 113202.41 238 233 46.5
B 5 15 5089938 109556.42 238 233 46.5
B 5 14 2362642 50851.1 238 233 46.5
C 0 207 1288271 9570.24 581 584 134.6
C 8 111 304478 2258.58 581 584 134.6
C 15 214 240144 1780.44 581 584 134.6
D 8 195 512271 3466.01 604 589 147.6
D 12 6 351626 2377.84 604 589 147.6
D 12 227 171202 1155.69 604 589 147.6

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