ASTROSAT CZTI

Data Quality Report

Orbit 06270

Creation date: 2024-06-27T15:04:57.832416
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/AS1C02_018T01_9000000822_06270cztM0_level2.evt modeM0/AS1C02_018T01_9000000822_06270cztM0_level2_quad_clean.evt
Size (bytes)611,337,60089,035,200
Size583.0 MB 84.9 MB
Events in quadrant A4,189,848558,212
Events in quadrant B4,214,202562,259
Events in quadrant C3,005,409578,061
Events in quadrant D6,641,030519,619

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168492
B0171141
C0139701
D0245041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6855470.685631%
B68551862.713348%
C685590.131291%
D68556499.467542%

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 7520 6856 12 12 0.16% 0.18%
B 7520 6856 89 89 1.18% 1.30%
C 7520 6856 0 0 0.00% 0.00%
D 7520 6856 597 597 7.94% 8.71%

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 1018072 6215.64 789 771 163.7
A 13 251 123580 750.35 789 771 163.7
A 0 226 7778 42.81 789 771 163.7
B 4 81 301724 1953.74 794 777 154.0
B 0 219 277966 1799.51 794 777 154.0
B 3 64 204007 1319.37 794 777 154.0
C 1 16 13631 72.1 766 771 178.4
C 13 61 6059 29.65 766 771 178.4
C 9 54 3185 13.53 766 771 178.4
D 12 220 3035337 16274.04 741 717 186.5
D 2 152 211630 1131.08 741 717 186.5
D 12 221 177939 950.4 741 717 186.5

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