ASTROSAT CZTI

Data Quality Report

Orbit 00555

Creation date: 2024-06-27T13:59:41.772516
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/AS1P01_015T01_9000000074_00555cztM0_level2.evt modeM0/AS1P01_015T01_9000000074_00555cztM0_level2_quad_clean.evt
Size (bytes)642,502,08043,404,480
Size612.7 MB 41.4 MB
Events in quadrant A5,032,543257,078
Events in quadrant B4,801,438259,939
Events in quadrant C4,486,629257,062
Events in quadrant D4,863,138249,796

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178411
B0171501
C0162701
D0173371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A411440.097229%
B411440.097229%
C411440.097229%
D4114170.413223%

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 4114 4114 129 129 3.14% 3.14%
B 4114 4114 51 51 1.24% 1.24%
C 4114 4114 46 46 1.12% 1.12%
D 4114 4114 96 96 2.33% 2.33%

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 13 160 182238 663.64 1210 1198 272.8
A 0 238 86963 314.39 1210 1198 272.8
A 0 149 46574 166.33 1210 1198 272.8
B 8 4 48353 164.55 1220 1227 286.4
B 4 235 18599 60.66 1220 1227 286.4
B 5 2 16779 54.3 1220 1227 286.4
C 3 159 66808 208.61 1118 1160 314.7
C 1 1 15535 45.68 1118 1160 314.7
C 15 241 10420 29.43 1118 1160 314.7
D 1 239 374755 1106.77 1058 1092 337.6
D 13 221 130362 382.89 1058 1092 337.6
D 2 90 87937 257.23 1058 1092 337.6

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