ASTROSAT CZTI

Data Quality Report

Orbit 21535

Creation date: 2024-06-27T18:29:04.702078
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/AS1A05_144T02_9000003176_21535cztM0_level2.evt modeM0/AS1A05_144T02_9000003176_21535cztM0_level2_quad_clean.evt
Size (bytes)290,957,76077,238,720
Size277.5 MB 73.7 MB
Events in quadrant A1,778,298515,211
Events in quadrant B1,861,719528,979
Events in quadrant C1,951,896519,397
Events in quadrant D2,945,451492,031

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081851
B083391
C085991
D0117151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A402010.024876%
B402060.149254%
C4020180.447761%
D40201072.661692%

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 4020 4020 0 0 0.00% 0.00%
B 4020 4020 0 0 0.00% 0.00%
C 4020 4020 0 0 0.00% 0.00%
D 4020 4020 86 86 2.14% 2.14%

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 13 254 5496 54.63 461 452 92.3
A 0 226 3877 37.09 461 452 92.3
A 3 137 3772 35.96 461 452 92.3
B 0 230 26293 291.52 464 451 88.6
B 12 111 10414 112.39 464 451 88.6
B 11 111 9136 97.97 464 451 88.6
C 3 233 130230 1246.52 448 452 104.1
C 14 238 70702 674.75 448 452 104.1
C 13 61 3102 25.45 448 452 104.1
D 1 52 1026470 9497.86 444 430 108.0
D 14 35 131454 1212.86 444 430 108.0
D 7 38 35861 327.98 444 430 108.0

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