ASTROSAT CZTI

Data Quality Report

Orbit 46889

Creation date: 2024-06-27T23:29:08.288174
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/AS1A13_068T13_9000006278_46889cztM0_level2.fits modeM0/AS1A13_068T13_9000006278_46889cztM0_level2_quad_clean.evt
Size (bytes)187,689,60028,054,080
Size179.0 MB 26.8 MB
Events in quadrant A1,868,240189,185
Events in quadrant B3,034,893141,600
Events in quadrant C873,504198,599
Events in quadrant D1,020,635181,258

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067241
B0103591
C039601
D043911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19051357.086614%
B190582443.254593%
C1905472.467192%
D1905683.569554%

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 2575 1905 0 0 0.00% 0.00%
B 2575 1905 355 355 13.79% 18.64%
C 2575 1906 0 0 0.00% 0.00%
D 2575 1906 18 18 0.70% 0.94%

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 1012764 20901.52 221 215 48.4
A 3 137 2743 52.18 221 215 48.4
A 13 254 2676 50.8 221 215 48.4
B 3 112 2210817 51775.56 203 196 42.7
B 4 171 13251 305.76 203 196 42.7
B 12 111 5516 124.6 203 196 42.7
C 14 254 12215 223.79 219 220 53.6
C 3 233 4431 78.57 219 220 53.6
C 13 61 1521 24.27 219 220 53.6
D 13 249 160274 2907.04 217 210 55.1
D 2 31 13249 236.81 217 210 55.1
D 2 249 8872 157.32 217 210 55.1

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