ASTROSAT CZTI

Data Quality Report

Orbit 36918

Creation date: 2024-06-27T21:33:12.526998
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_010T01_9000005246_36918cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36918cztM0_level2_quad_clean.evt
Size (bytes)765,792,000115,174,080
Size730.3 MB 109.8 MB
Events in quadrant A6,174,002879,129
Events in quadrant B1,901,27413,438
Events in quadrant C6,336,733880,346
Events in quadrant D7,910,553837,418

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262945
B0127484
C0264346
D0321754

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12639130.102856%
B1263912639100.000000%
C12638380.300680%
D126385554.391518%

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 26068 12642 1 1 0.00% 0.01%
B 26067 12638 0 0 0.00% 0.00%
C 26068 12641 27 27 0.10% 0.21%
D 26068 12641 521 521 2.00% 4.12%

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 494504 1731.81 1419 1393 284.7
A 12 189 106160 367.94 1419 1393 284.7
A 7 16 54872 187.82 1419 1393 284.7
B 12 243 1755515 244385.59 26 26 7.2
B 12 144 33594 4673.08 26 26 7.2
B 5 255 2595 357.64 26 26 7.2
C 15 214 538990 1659.43 1389 1398 324.0
C 0 207 214525 657.88 1389 1398 324.0
C 0 10 158115 483.75 1389 1398 324.0
D 10 253 895312 2707.11 1356 1319 330.2
D 5 222 503560 1520.84 1356 1319 330.2
D 13 249 438040 1322.44 1356 1319 330.2

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