ASTROSAT CZTI

Data Quality Report

Orbit 35328

Creation date: 2024-06-27T21:12:04.845706
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/AS1A11_093T01_9000005064_35328cztM0_level2.evt modeM0/AS1A11_093T01_9000005064_35328cztM0_level2_quad_clean.evt
Size (bytes)1,357,871,040221,515,200
Size1.3 GB 211.3 MB
Events in quadrant A9,445,7961,449,586
Events in quadrant B14,830,5651,363,074
Events in quadrant C7,361,8401,534,078
Events in quadrant D8,573,6811,426,957

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0373814
B0533243
C0300953
D0347643

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135226835.051028%
B13522290821.505694%
C135221731.279397%
D135224893.616329%

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 17701 13525 743 743 4.20% 5.49%
B 17701 13523 2116 2116 11.95% 15.65%
C 17701 13525 137 137 0.77% 1.01%
D 17701 13525 441 441 2.49% 3.26%

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 3121904 10355.79 1511 1481 301.3
A 10 83 185395 610.36 1511 1481 301.3
A 7 3 58219 188.3 1511 1481 301.3
B 5 236 5751099 21562.74 1401 1362 266.7
B 5 172 3195280 11977.87 1401 1362 266.7
B 5 200 146548 544.48 1401 1362 266.7
C 0 10 839051 2440.91 1495 1509 343.1
C 15 214 547710 1591.83 1495 1509 343.1
C 3 233 58382 165.75 1495 1509 343.1
D 1 47 694512 1961.48 1468 1428 353.3
D 8 195 526525 1486.06 1468 1428 353.3
D 2 153 454206 1281.4 1468 1428 353.3

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