ASTROSAT CZTI

Data Quality Report

Orbit 07623

Creation date: 2024-06-27T15:21:56.139255
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/AS1A02_178T01_9000001048_07623cztM0_level2.evt modeM0/AS1A02_178T01_9000001048_07623cztM0_level2_quad_clean.evt
Size (bytes)1,148,307,840174,116,160
Size1.1 GB 166.1 MB
Events in quadrant A8,572,2771,064,083
Events in quadrant B7,430,4951,083,683
Events in quadrant C9,863,7461,050,162
Events in quadrant D7,880,3411,023,219

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0353224
B0320223
C0390883
D0339633

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03120
B03120
C03120
D03120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A152381300.853130%
B152381360.892506%
C152385483.596272%
D152382081.365009%

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 17918 15241 61 61 0.34% 0.40%
B 17918 15241 50 50 0.28% 0.33%
C 17918 15241 402 402 2.24% 2.64%
D 17918 15241 106 106 0.59% 0.70%

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 13 251 1588011 4356.32 1805 1764 364.1
A 13 248 28629 73.78 1805 1764 364.1
A 0 226 17117 42.16 1805 1764 364.1
B 4 239 144370 414.0 1814 1769 344.4
B 0 214 125691 359.77 1814 1769 344.4
B 4 81 65731 185.69 1814 1769 344.4
C 9 68 2343899 5778.52 1746 1756 405.3
C 4 254 539202 1325.98 1746 1756 405.3
C 8 229 149950 365.62 1746 1756 405.3
D 2 14 485651 1117.63 1762 1709 433.0
D 2 152 362819 833.96 1762 1709 433.0
D 13 104 194313 444.81 1762 1709 433.0

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