ASTROSAT CZTI

Data Quality Report

Orbit 36267

Creation date: 2022-06-13T15:57:56.301452
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/AS1A10_071T36_9000005182_36267cztM0_level2.evt modeM0/AS1A10_071T36_9000005182_36267cztM0_level2_quad_clean.evt
Size (bytes)555,197,76086,402,880
Size529.5 MB 82.4 MB
Events in quadrant A3,255,237556,886
Events in quadrant B4,898,909524,347
Events in quadrant C3,719,147549,172
Events in quadrant D4,487,443519,491

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137733
B0188282
C0150342
D0177372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6689120.179399%
B66895508.222455%
C6689580.867095%
D66891692.526536%

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 9315 6691 1 1 0.01% 0.01%
B 9315 6691 433 433 4.65% 6.47%
C 9315 6691 44 44 0.47% 0.66%
D 9315 6691 149 149 1.60% 2.23%

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 196222 1226.43 781 765 159.4
A 9 143 20511 123.9 781 765 159.4
A 12 189 16114 96.31 781 765 159.4
B 5 172 1552399 10780.51 746 727 143.9
B 5 236 172824 1195.67 746 727 143.9
B 8 128 82476 567.97 746 727 143.9
C 0 10 449624 2514.1 755 760 178.5
C 15 214 277748 1551.41 755 760 178.5
C 0 207 48614 268.03 755 760 178.5
D 12 6 589993 3233.84 747 727 182.2
D 13 171 390724 2140.27 747 727 182.2
D 13 249 210957 1153.72 747 727 182.2

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