ASTROSAT CZTI

Data Quality Report

Orbit 14938

Creation date: 2024-06-27T17:01:32.361391
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_055T01_9000002206_14938cztM0_level2.evt modeM0/AS1T02_055T01_9000002206_14938cztM0_level2_quad_clean.evt
Size (bytes)832,072,320163,362,240
Size793.5 MB 155.8 MB
Events in quadrant A5,286,5521,094,270
Events in quadrant B7,464,9871,059,292
Events in quadrant C5,139,5111,050,207
Events in quadrant D6,598,5881,017,203

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219223
B0286862
C0215752
D0265012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A104971651.571878%
B104977677.306850%
C10497930.885967%
D104974173.972564%

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 13073 10500 2 2 0.02% 0.02%
B 13073 10500 433 433 3.31% 4.12%
C 13073 10500 1 1 0.01% 0.01%
D 13073 10499 262 262 2.00% 2.50%

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 12 189 122804 460.33 1332 1308 263.9
A 3 1 29995 108.69 1332 1308 263.9
A 0 226 11970 40.4 1332 1308 263.9
B 10 16 2057157 8568.06 1295 1262 239.9
B 0 219 176045 728.42 1295 1262 239.9
B 0 229 80235 329.12 1295 1262 239.9
C 3 233 223634 778.43 1259 1261 285.7
C 13 61 9134 27.56 1259 1261 285.7
C 10 22 7027 20.18 1259 1261 285.7
D 13 249 744560 2495.79 1259 1226 297.8
D 7 254 575626 1928.58 1259 1226 297.8
D 13 104 318349 1064.76 1259 1226 297.8

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