ASTROSAT CZTI

Data Quality Report

Orbit 13498

Creation date: 2024-06-27T16:41:41.940842
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/AS1A04_103T01_9000001988_13498cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13498cztM0_level2_quad_clean.evt
Size (bytes)2,657,661,120516,980,160
Size2.5 GB 493.0 MB
Events in quadrant A18,691,3323,268,994
Events in quadrant B20,385,8513,305,747
Events in quadrant C18,725,4503,237,143
Events in quadrant D19,974,8323,092,155

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0825688
B0872367
C0822327
D0868207

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08160
B08160
C08160
D08160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A401282410.600578%
B401286441.604864%
C401282090.520833%
D401282730.680323%

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 44169 40133 0 0 0.00% 0.00%
B 44169 40132 233 233 0.53% 0.58%
C 44169 40133 3 3 0.01% 0.01%
D 44169 40133 191 191 0.43% 0.48%

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 8 15 279107 286.67 4744 4637 957.5
A 1 162 113992 114.21 4744 4637 957.5
A 0 226 41954 38.98 4744 4637 957.5
B 3 64 907101 1007.91 4745 4627 895.4
B 10 245 379027 418.14 4745 4627 895.4
B 4 173 202267 220.73 4745 4627 895.4
C 3 233 518791 479.9 4642 4669 1071.3
C 0 207 114842 102.84 4642 4669 1071.3
C 13 61 33811 27.2 4642 4669 1071.3
D 8 195 1414465 1287.93 4580 4456 1094.8
D 12 110 310709 279.74 4580 4456 1094.8
D 7 223 298434 268.52 4580 4456 1094.8

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