ASTROSAT CZTI

Data Quality Report

Orbit 16074

Creation date: 2024-06-27T17:17:34.226469
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/AS1A04_230T01_9000002374_16074cztM0_level2.evt modeM0/AS1A04_230T01_9000002374_16074cztM0_level2_quad_clean.evt
Size (bytes)832,464,000152,141,760
Size793.9 MB 145.1 MB
Events in quadrant A6,412,731965,150
Events in quadrant B6,238,103966,010
Events in quadrant C5,863,016931,759
Events in quadrant D5,893,595923,608

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269223
B0262262
C0249222
D0255652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118711191.002443%
B118711931.625811%
C118711531.288855%
D11871740.623368%

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 12772 11872 5 5 0.04% 0.04%
B 12772 11872 33 33 0.26% 0.28%
C 12772 11872 5 5 0.04% 0.04%
D 12772 11872 14 14 0.11% 0.12%

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 3 80 885154 3065.42 1419 1386 288.3
A 9 143 28229 93.11 1419 1386 288.3
A 15 69 15857 50.19 1419 1386 288.3
B 0 189 196978 712.75 1419 1381 274.4
B 7 220 153193 553.2 1419 1381 274.4
B 0 190 72705 259.9 1419 1381 274.4
C 3 233 279920 870.99 1366 1378 319.8
C 14 238 205073 636.95 1366 1378 319.8
C 10 22 32452 97.17 1366 1378 319.8
D 1 52 493231 1443.22 1390 1353 340.8
D 2 152 59669 171.1 1390 1353 340.8
D 2 234 51952 148.46 1390 1353 340.8

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