ASTROSAT CZTI

Data Quality Report

Orbit 25524

Creation date: 2024-06-27T19:18:38.807617
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/AS1A07_147T01_9000003722_25524cztM0_level2.evt modeM0/AS1A07_147T01_9000003722_25524cztM0_level2_quad_clean.evt
Size (bytes)499,818,24090,990,720
Size476.7 MB 86.8 MB
Events in quadrant A3,246,356587,551
Events in quadrant B3,315,562591,203
Events in quadrant C3,268,092556,567
Events in quadrant D4,849,998550,782

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139600
B0141060
C0139360
D0189930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6735981.455085%
B67361231.826010%
C67361422.108076%
D67352583.830735%

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 7015 6736 0 0 0.00% 0.00%
B 7016 6737 0 0 0.00% 0.00%
C 7016 6737 0 0 0.00% 0.00%
D 7015 6736 203 203 2.89% 3.01%

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 13 254 9441 50.16 841 822 171.8
A 3 137 7839 40.83 841 822 171.8
A 0 226 7182 37.01 841 822 171.8
B 15 33 40205 244.55 832 810 161.1
B 12 111 19798 117.87 832 810 161.1
B 11 111 18025 106.86 832 810 161.1
C 14 238 126836 671.61 798 803 187.7
C 7 247 20351 104.17 798 803 187.7
C 2 16 5896 27.14 798 803 187.7
D 1 52 1070728 5357.17 812 789 199.7
D 8 195 693615 3468.97 812 789 199.7
D 2 234 28511 138.8 812 789 199.7

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