ASTROSAT CZTI

Data Quality Report

Orbit 36180

Creation date: 2022-06-08T05:42:30.481011
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/AS1A10_071T50_9000005166_36180cztM0_level2.evt modeM0/AS1A10_071T50_9000005166_36180cztM0_level2_quad_clean.evt
Size (bytes)795,096,00077,290,560
Size758.3 MB 73.7 MB
Events in quadrant A2,937,592548,213
Events in quadrant B3,786,804544,040
Events in quadrant C3,600,467543,247
Events in quadrant D13,347,224282,160

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124643
B0150662
C0143592
D0437702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6027100.165920%
B60272063.417953%
C6027851.410320%
D6027477679.243405%

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 7340 6028 2 2 0.03% 0.03%
B 7340 6028 156 156 2.13% 2.59%
C 7340 6028 65 65 0.89% 1.08%
D 7340 6028 4431 4431 60.37% 73.51%

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 188301 1313.2 700 685 142.9
A 9 143 14300 95.3 700 685 142.9
A 8 144 14190 94.53 700 685 142.9
B 5 172 445892 3304.46 686 667 134.7
B 5 236 420809 3118.29 686 667 134.7
B 0 213 111383 821.73 686 667 134.7
C 15 214 275884 1723.02 678 683 159.7
C 15 208 267148 1668.32 678 683 159.7
C 0 10 221868 1384.83 678 683 159.7
D 2 31 9399221 83463.02 458 445 112.6
D 2 250 1360112 12074.12 458 445 112.6
D 12 235 245999 2180.57 458 445 112.6

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