ASTROSAT CZTI

Data Quality Report

Orbit 00270

Creation date: 2024-06-27T13:58:33.391930
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/AS1P01_126T01_9000000030_00270cztM0_level2.evt modeM0/AS1P01_126T01_9000000030_00270cztM0_level2_quad_clean.evt
Size (bytes)2,242,183,680114,183,360
Size2.1 GB 108.9 MB
Events in quadrant A16,315,369636,364
Events in quadrant B18,220,780633,964
Events in quadrant C14,828,369646,400
Events in quadrant D17,655,058613,040

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580144
B0637263
C0535803
D0620083

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1342780.059581%
B134273622.696060%
C1342790.067029%
D134273672.733299%

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 18630 13430 314 314 1.69% 2.34%
B 18630 13430 977 977 5.24% 7.27%
C 18630 13430 123 123 0.66% 0.92%
D 18630 13430 1081 1081 5.80% 8.05%

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 15 250 40572 39.13 4193 4152 930.8
A 11 242 18008 14.89 4193 4152 930.8
A 15 127 15168 11.84 4193 4152 930.8
B 2 32 1718078 1761.9 4119 4149 972.8
B 8 9 374354 380.57 4119 4149 972.8
B 5 46 190877 191.95 4119 4149 972.8
C 2 192 26229 21.19 3763 3896 1054.1
C 3 159 18030 13.41 3763 3896 1054.1
C 7 221 10331 6.1 3763 3896 1054.1
D 13 7 2337677 2056.51 3621 3773 1134.9
D 10 154 665592 583.16 3621 3773 1134.9
D 1 5 251737 218.49 3621 3773 1134.9

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