ASTROSAT CZTI

Data Quality Report

Orbit 39821

Creation date: 2024-06-27T22:09:17.540556
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/AS1A12_022T01_9000005498_39821cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39821cztM0_level2_quad_clean.evt
Size (bytes)2,160,815,040258,871,680
Size2.0 GB 246.9 MB
Events in quadrant A10,797,7182,097,465
Events in quadrant B11,775,8172,105,801
Events in quadrant C43,494,467499,439
Events in quadrant D12,416,2621,795,552

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0441266
B0480925
C01426015
D0513295

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04020
B04020
C04020
D04020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A194211670.859894%
B194215702.934967%
C194211558480.243036%
D194219995.143916%

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 27544 19426 135 135 0.49% 0.69%
B 27544 19426 381 381 1.38% 1.96%
C 27544 19423 13434 13434 48.77% 69.17%
D 27544 19426 882 882 3.20% 4.54%

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 1457500 3419.09 2113 2071 425.7
A 9 143 428382 1001.49 2113 2071 425.7
A 14 235 417579 976.11 2113 2071 425.7
B 4 171 2618124 6644.59 2070 2009 393.7
B 5 255 287536 725.2 2070 2009 393.7
B 5 172 239929 604.28 2070 2009 393.7
C 9 187 33600917 127819.2 1145 1150 262.9
C 15 208 4889058 18594.43 1145 1150 262.9
C 15 214 474664 1801.33 1145 1150 262.9
D 2 249 1865361 3838.37 2008 1947 485.5
D 12 227 1606891 3305.96 2008 1947 485.5
D 13 249 491964 1009.36 2008 1947 485.5

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