ASTROSAT CZTI

Data Quality Report

Orbit 27206

Creation date: 2024-06-27T19:37:42.578820
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_243T01_9000003918_27206cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27206cztM0_level2_quad_clean.evt
Size (bytes)1,055,096,640144,498,240
Size1006.2 MB 137.8 MB
Events in quadrant A6,144,397900,574
Events in quadrant B7,795,955904,586
Events in quadrant C6,163,410875,860
Events in quadrant D10,975,950800,810

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265290
B0315590
C0264230
D0413220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12937970.749787%
B129373292.543093%
C129371551.198114%
D12936144311.154917%

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 14197 12939 3 3 0.02% 0.02%
B 14197 12939 113 113 0.80% 0.87%
C 14197 12939 1 1 0.01% 0.01%
D 14196 12937 1208 1208 8.51% 9.34%

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 8 192 18670 53.82 1582 1550 318.1
A 13 254 18388 52.93 1582 1550 318.1
A 14 235 15364 43.42 1582 1550 318.1
B 3 64 1445416 4818.81 1567 1527 299.6
B 10 245 147767 488.06 1567 1527 299.6
B 12 111 37693 120.7 1567 1527 299.6
C 14 238 238965 666.8 1512 1521 356.1
C 4 224 19596 50.76 1512 1521 356.1
C 13 61 10343 24.77 1512 1521 356.1
D 1 52 4209556 12083.09 1433 1399 348.3
D 5 222 438660 1255.53 1433 1399 348.3
D 15 0 424000 1213.43 1433 1399 348.3

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