ASTROSAT CZTI

Data Quality Report

Orbit 22990

Creation date: 2024-06-27T18:48:26.595319
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/AS1A08_004T03_9000003400_22990cztM0_level2.evt modeM0/AS1A08_004T03_9000003400_22990cztM0_level2_quad_clean.evt
Size (bytes)171,984,96021,133,440
Size164.0 MB 20.2 MB
Events in quadrant A1,098,903121,597
Events in quadrant B1,114,827125,930
Events in quadrant C1,105,147122,302
Events in quadrant D1,744,546117,451

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045632
B045902
C045692
D065632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20901607.655502%
B20901748.325359%
C20901587.559809%
D209025712.296651%

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 2260 2093 0 0 0.00% 0.00%
B 2260 2093 1 1 0.04% 0.05%
C 2260 2093 0 0 0.00% 0.00%
D 2260 2093 104 104 4.60% 4.97%

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 13 254 3105 47.09 284 277 60.1
A 3 137 2762 41.37 284 277 60.1
A 0 226 2413 35.56 284 277 60.1
B 12 111 7227 119.01 281 272 58.4
B 11 111 6352 104.04 281 272 58.4
B 5 172 5885 96.05 281 272 58.4
C 14 238 41786 636.58 271 271 65.2
C 7 247 6021 88.17 271 271 65.2
C 13 61 1935 25.52 271 271 65.2
D 1 52 642565 9346.34 273 264 68.7
D 13 153 32748 472.69 273 264 68.7
D 13 104 21178 304.33 273 264 68.7

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