ASTROSAT CZTI

Data Quality Report

Orbit 08446

Creation date: 2024-06-27T15:32:50.624549
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/AS1A03_074T01_9000001192_08446cztM0_level2.evt modeM0/AS1A03_074T01_9000001192_08446cztM0_level2_quad_clean.evt
Size (bytes)826,113,600159,857,280
Size787.8 MB 152.5 MB
Events in quadrant A5,830,912976,246
Events in quadrant B6,331,796985,667
Events in quadrant C5,807,4401,020,502
Events in quadrant D6,184,510978,596

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028430
B028422
C028432
D028426

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0161
D0162

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285762575
B0301012799
C0284592513
D0298742787

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12743720.565016%
B127191311.029955%
C12779500.391267%
D12698680.535517%

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 15597 13484 0 0 0.00% 0.00%
B 15596 13490 14 14 0.09% 0.10%
C 15596 13510 0 0 0.00% 0.00%
D 15596 13478 21 21 0.13% 0.16%

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 0 128 14845 43.67 1503 1468 306.3
A 0 226 13871 40.49 1503 1468 306.3
A 12 194 13649 39.76 1503 1468 306.3
B 10 245 195872 671.36 1507 1466 289.6
B 0 214 137050 468.22 1507 1466 289.6
B 4 81 70360 237.92 1507 1466 289.6
C 8 128 15223 40.23 1478 1485 341.5
C 12 4 13087 33.97 1478 1485 341.5
C 13 61 11215 28.49 1478 1485 341.5
D 2 152 253011 642.86 1457 1419 391.4
D 12 227 169544 429.59 1457 1419 391.4
D 2 14 137638 348.06 1457 1419 391.4

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