ASTROSAT CZTI

Data Quality Report

Orbit 37727

Creation date: 2024-06-27T21:43:41.128872
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_106T02_9000005344_37727cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37727cztM0_level2_quad_clean.evt
Size (bytes)656,922,24083,505,600
Size626.5 MB 79.6 MB
Events in quadrant A6,690,276528,532
Events in quadrant B3,566,525556,549
Events in quadrant C2,842,778573,454
Events in quadrant D6,429,530490,295

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236253
B0143242
C0117762
D0227922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5419112220.704927%
B54192133.930615%
C5419721.328658%
D5419106419.634619%

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 7032 5420 1024 1024 14.56% 18.89%
B 7031 5418 162 162 2.30% 2.99%
C 7031 5418 61 61 0.87% 1.13%
D 7031 5418 1241 1241 17.65% 22.91%

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 15 222 4035661 34723.6 576 565 116.2
A 10 83 309832 2661.36 576 565 116.2
A 7 16 44503 378.1 576 565 116.2
B 4 171 830209 7324.44 591 575 113.3
B 5 172 145952 1283.46 591 575 113.3
B 4 81 47891 417.73 591 575 113.3
C 15 214 229205 1665.67 591 595 137.2
C 0 10 220422 1601.67 591 595 137.2
C 15 208 37436 268.43 591 595 137.2
D 12 227 2880500 21535.7 550 534 133.7
D 2 249 666304 4978.47 550 534 133.7
D 1 47 211235 1575.57 550 534 133.7

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