ASTROSAT CZTI

Data Quality Report

Orbit 11775

Creation date: 2024-06-27T16:18:08.890801
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/AS1C03_024T01_9000001742_11775cztM0_level2.evt modeM0/AS1C03_024T01_9000001742_11775cztM0_level2_quad_clean.evt
Size (bytes)1,239,226,560154,281,600
Size1.2 GB 147.1 MB
Events in quadrant A8,416,669952,387
Events in quadrant B13,759,790913,402
Events in quadrant C5,658,489998,603
Events in quadrant D8,835,522925,042

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337743
B0496892
C0259622
D0350752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127674483.509047%
B12767164912.916112%
C12767490.383802%
D127677235.663038%

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 13953 12770 268 268 1.92% 2.10%
B 13953 12770 1027 1027 7.36% 8.04%
C 13953 12770 2 2 0.01% 0.02%
D 13953 12770 606 606 4.34% 4.75%

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 8 15 1488166 5005.75 1453 1419 297.0
A 5 16 873122 2934.95 1453 1419 297.0
A 1 162 166587 556.11 1453 1419 297.0
B 10 16 6028505 22322.14 1419 1381 270.0
B 4 239 915818 3386.72 1419 1381 270.0
B 3 64 741389 2740.7 1419 1381 270.0
C 14 234 18848 51.72 1445 1452 336.3
C 13 61 10672 27.41 1445 1452 336.3
C 8 222 4434 8.87 1445 1452 336.3
D 1 52 1987522 5770.58 1415 1372 344.2
D 9 85 474346 1374.18 1415 1372 344.2
D 10 199 352277 1019.52 1415 1372 344.2

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