ASTROSAT CZTI

Data Quality Report

Orbit 17504

Creation date: 2024-06-27T17:37:22.812971
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/AS1T03_068T01_9000002594_17504cztM0_level2.evt modeM0/AS1T03_068T01_9000002594_17504cztM0_level2_quad_clean.evt
Size (bytes)870,422,400178,194,240
Size830.1 MB 169.9 MB
Events in quadrant A5,860,0781,163,247
Events in quadrant B6,114,9301,165,119
Events in quadrant C6,071,4711,115,073
Events in quadrant D7,450,7611,072,158

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262612
B0266402
C0262372
D0312302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12751980.768567%
B127521240.972396%
C127521591.246863%
D127526745.285445%

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 13456 12753 5 5 0.04% 0.04%
B 13457 12754 13 13 0.10% 0.10%
C 13457 12754 0 0 0.00% 0.00%
D 13457 12754 467 467 3.47% 3.66%

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 15 174 37103 116.93 1509 1474 304.7
A 4 2 19794 60.12 1509 1474 304.7
A 0 226 13075 38.07 1509 1474 304.7
B 7 220 127906 442.85 1502 1461 285.5
B 12 111 33675 112.82 1502 1461 285.5
B 11 111 28900 96.1 1502 1461 285.5
C 14 238 222437 654.83 1450 1459 337.5
C 5 218 109138 319.09 1450 1459 337.5
C 3 233 76667 222.87 1450 1459 337.5
D 10 70 1313264 3736.08 1452 1409 351.1
D 13 189 461388 1309.99 1452 1409 351.1
D 11 176 58101 161.46 1452 1409 351.1

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