ASTROSAT CZTI

Data Quality Report

Orbit 34725

Creation date: 2022-03-02T17:46:29.818516
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_001T01_9000004982_34725cztM0_level2.evt modeM0/AS1C07_001T01_9000004982_34725cztM0_level2_quad_clean.evt
Size (bytes)540,152,64095,653,440
Size515.1 MB 91.2 MB
Events in quadrant A3,633,537641,836
Events in quadrant B2,782,210670,132
Events in quadrant C2,877,015660,219
Events in quadrant D6,706,750552,957

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143313
B0115822
C0116152
D0235822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5304891.677979%
B5304470.886124%
C5304641.206637%
D5304116521.964555%

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 7306 5305 68 68 0.93% 1.28%
B 7306 5305 32 32 0.44% 0.60%
C 7306 5305 45 45 0.62% 0.85%
D 7306 5305 1068 1068 14.62% 20.13%

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 1110087 8760.06 631 621 126.7
A 10 83 48226 375.88 631 621 126.7
A 9 143 18921 144.49 631 621 126.7
B 5 172 194628 1649.41 632 618 117.6
B 5 255 41139 344.5 632 618 117.6
B 4 171 21875 180.72 632 618 117.6
C 15 214 225261 1595.64 615 621 140.8
C 0 10 162465 1149.59 615 621 140.8
C 0 207 62851 442.03 615 621 140.8
D 2 250 2795545 19859.41 557 544 140.7
D 8 195 618413 4390.16 557 544 140.7
D 12 233 395150 2803.81 557 544 140.7

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