ASTROSAT CZTI

Data Quality Report

Orbit 51421

Creation date: 2025-03-31T22:18:39.831302
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/AS1A13_090T01_9000006458_51421cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51421cztM0_level2_quad_clean.evt
Size (bytes)664,597,44092,237,760
Size633.8 MB 88.0 MB
Events in quadrant A5,141,493641,427
Events in quadrant B4,635,228686,053
Events in quadrant C10,698,912395,443
Events in quadrant D3,605,527602,552

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199472
B0182273
C0363902
D0153882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67043875.772673%
B67034817.175891%
C6703284742.473519%
D67031271.894674%

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 7804 6705 199 199 2.55% 2.97%
B 7803 6703 274 274 3.51% 4.09%
C 7803 6703 2520 2520 32.30% 37.60%
D 7803 6704 45 45 0.58% 0.67%

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 3 621869 3398.9 752 733 182.7
A 15 174 491334 2684.61 752 733 182.7
A 5 240 200582 1093.59 752 733 182.7
B 5 172 653090 4191.92 732 708 155.6
B 5 185 372454 2388.67 732 708 155.6
B 10 14 168558 1078.53 732 708 155.6
C 15 179 3488516 21765.61 579 574 160.3
C 15 230 1455653 9080.05 579 574 160.3
C 4 12 917831 5723.9 579 574 160.3
D 2 153 116275 566.91 735 710 203.9
D 5 157 64424 312.55 735 710 203.9
D 10 172 64226 311.58 735 710 203.9

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