ASTROSAT CZTI

Data Quality Report

Orbit 32035

Creation date: 2024-06-27T20:35:41.018620
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/AS1T04_046T01_9000004680_32035cztM0_level2.evt modeM0/AS1T04_046T01_9000004680_32035cztM0_level2_quad_clean.evt
Size (bytes)1,118,416,320226,650,240
Size1.0 GB 216.2 MB
Events in quadrant A6,255,0161,563,808
Events in quadrant B10,355,4441,509,242
Events in quadrant C7,201,7821,512,068
Events in quadrant D9,261,2861,460,877

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026194845
B0399641384
C029712970
D0363531136

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201
B0201
C0212
D0201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02486
B02495
C02519
D02515

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118511361.147582%
B118116265.300144%
C118444103.461668%
D118414303.631450%

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 18487 11913 0 0 0.00% 0.00%
B 18484 11881 276 276 1.49% 2.32%
C 18485 11905 50 50 0.27% 0.42%
D 18485 11906 227 227 1.23% 1.91%

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 6 36284 109.88 1610 1585 315.8
A 13 254 23116 68.18 1610 1585 315.8
A 3 137 14913 42.2 1610 1585 315.8
B 6 159 3111299 10951.76 1544 1508 284.0
B 12 18 762093 2678.55 1544 1508 284.0
B 0 190 174395 608.86 1544 1508 284.0
C 3 233 677588 1945.96 1525 1541 347.4
C 14 238 253701 725.83 1525 1541 347.4
C 0 10 199048 568.51 1525 1541 347.4
D 8 195 2080437 5755.4 1545 1506 361.2
D 2 250 583324 1610.73 1545 1506 361.2
D 12 218 555278 1533.09 1545 1506 361.2

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