ASTROSAT CZTI

Data Quality Report

Orbit 20220702_A11_049T02_9000005220_level2

Creation date: 2022-07-04T15:55:03.318081
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_049T02_9000005220cztM0_level2_bc.evt modeM0/AS1A11_049T02_9000005220cztM0_level2_quad_clean.evt
Size (bytes)2,097,849,600644,849,280
Size2.0 GB 615.0 MB
Events in quadrant A13,145,8254,124,525
Events in quadrant B15,368,8594,103,974
Events in quadrant C14,092,3064,054,334
Events in quadrant D17,559,4533,855,929

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01098730
B01197550
C01098720
D01292310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010120
B010120
C010120
D010120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494386051.223755%
B4943813922.815648%
C494387971.612120%
D4943814863.005785%

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 67449 49449 36 36 0.05% 0.07%
B 67449 49438 128 128 0.19% 0.26%
C 67449 49438 144 144 0.21% 0.29%
D 67449 49435 115 115 0.17% 0.23%

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 10 83 1434216 2496.94 2603 2564 573.4
A 15 223 1260550 2194.05 2603 2564 573.4
A 9 143 200749 345.65 2603 2564 573.4
B 5 172 2732661 5361.03 2584 2530 509.3
B 5 255 1096090 2147.37 2584 2530 509.3
B 0 182 336413 655.63 2584 2530 509.3
C 15 214 1978767 3505.46 2503 2486 563.8
C 0 10 1708519 3026.1 2503 2486 563.8
C 14 254 353475 622.57 2503 2486 563.8
D 2 250 1625703 2757.02 2519 2452 588.8
D 12 235 1204697 2041.96 2519 2452 588.8
D 1 20 655651 1109.43 2519 2452 588.8

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