ASTROSAT CZTI

Data Quality Report

Orbit 16827

Creation date: 2024-06-27T17:28:18.385951
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/AS1A05_056T01_9000002498_16827cztM0_level2.evt modeM0/AS1A05_056T01_9000002498_16827cztM0_level2_quad_clean.evt
Size (bytes)1,421,035,200234,233,280
Size1.3 GB 223.4 MB
Events in quadrant A8,945,3751,495,041
Events in quadrant B9,057,8531,517,709
Events in quadrant C9,314,5711,419,117
Events in quadrant D14,454,2821,372,007

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390735
B0391464
C0388544
D0559574

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187261150.614119%
B187261330.710242%
C187261710.913169%
D1872610135.409591%

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 20422 18730 35 35 0.17% 0.19%
B 20422 18730 13 13 0.06% 0.07%
C 20422 18730 0 0 0.00% 0.00%
D 20422 18730 851 851 4.17% 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 9 143 231020 508.11 2229 2176 450.4
A 15 174 146077 319.51 2229 2176 450.4
A 0 226 19524 38.52 2229 2176 450.4
B 15 35 94320 215.43 2231 2170 427.7
B 4 173 86427 196.98 2231 2170 427.7
B 0 230 54635 122.66 2231 2170 427.7
C 3 233 631704 1256.95 2138 2149 500.9
C 14 238 331220 657.01 2138 2149 500.9
C 0 207 15737 27.13 2138 2149 500.9
D 1 52 4929834 9548.85 2127 2065 516.1
D 5 222 1386780 2683.25 2127 2065 516.1
D 2 234 74935 141.2 2127 2065 516.1

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