ASTROSAT CZTI

Data Quality Report

Orbit 34314

Creation date: 2024-06-27T20:59:00.424693
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/AS1A11_091T01_9000004894_34314cztM0_level2.evt modeM0/AS1A11_091T01_9000004894_34314cztM0_level2_quad_clean.evt
Size (bytes)841,947,840102,496,320
Size802.9 MB 97.7 MB
Events in quadrant A4,079,047637,248
Events in quadrant B5,877,276635,195
Events in quadrant C4,814,916627,966
Events in quadrant D10,121,599580,579

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180593
B0233162
C0195392
D0363932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A896950.055748%
B89693543.946928%
C89691371.527484%
D8969116412.978035%

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 10310 8970 1 1 0.01% 0.01%
B 10310 8970 216 216 2.10% 2.41%
C 10310 8970 109 109 1.06% 1.22%
D 10310 8970 950 950 9.21% 10.59%

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 10 83 32427 152.0 1037 1017 206.6
A 9 143 25314 117.58 1037 1017 206.6
A 13 254 15942 72.23 1037 1017 206.6
B 5 172 1142279 5835.05 1015 988 195.6
B 4 171 226101 1150.93 1015 988 195.6
B 4 251 172577 877.28 1015 988 195.6
C 14 254 424891 1830.35 999 1005 231.6
C 15 214 373178 1607.05 999 1005 231.6
C 0 10 73716 313.97 999 1005 231.6
D 1 52 1188177 5006.83 969 944 237.1
D 7 223 1103541 4649.9 969 944 237.1
D 10 118 1071357 4514.18 969 944 237.1

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