ASTROSAT CZTI

Data Quality Report

Orbit 15510

Creation date: 2024-06-27T17:09:38.089536
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/AS1T02_085T01_9000002296_15510cztM0_level2.evt modeM0/AS1T02_085T01_9000002296_15510cztM0_level2_quad_clean.evt
Size (bytes)905,253,120147,798,720
Size863.3 MB 141.0 MB
Events in quadrant A6,330,741937,356
Events in quadrant B5,390,118953,747
Events in quadrant C5,427,232924,524
Events in quadrant D9,522,315897,354

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263772
B0233181
C0229491
D0359131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110303833.472348%
B11030550.498640%
C11030720.652765%
D110308377.588395%

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 11496 11032 188 188 1.64% 1.70%
B 11496 11032 9 9 0.08% 0.08%
C 11496 11032 1 1 0.01% 0.01%
D 11496 11032 709 709 6.17% 6.43%

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 14 238 900241 3502.39 1270 1239 256.7
A 14 237 489163 1900.88 1270 1239 256.7
A 0 253 32964 123.6 1270 1239 256.7
B 0 189 71490 289.95 1281 1247 242.3
B 4 142 67333 272.79 1281 1247 242.3
B 0 230 48305 194.25 1281 1247 242.3
C 3 233 338041 1169.02 1236 1242 288.1
C 14 238 189802 654.49 1236 1242 288.1
C 7 247 52547 178.08 1236 1242 288.1
D 1 52 4120149 13908.07 1223 1183 296.2
D 5 222 556185 1874.01 1223 1183 296.2
D 5 51 80975 269.42 1223 1183 296.2

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