ASTROSAT CZTI

Data Quality Report

Orbit 52864

Creation date: 2025-07-16T11:07:24.408742
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/AS1C09_011T07_9000006480_52864cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52864cztM0_level2_quad_clean.evt
Size (bytes)319,475,52022,127,040
Size304.7 MB 21.1 MB
Events in quadrant A2,146,488183,840
Events in quadrant B3,882,147111,286
Events in quadrant C1,838,995160,052
Events in quadrant D3,795,77764,787

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078590
B0129660
C069750
D0126980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20721879.025097%
B2073109052.580801%
C207328213.603473%
D2073137366.232513%

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 2072 2072 185 185 8.93% 8.93%
B 2073 2073 968 968 46.70% 46.70%
C 2073 2073 226 226 10.90% 10.90%
D 2073 2073 1044 1044 50.36% 50.36%

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 9 191 713465 14074.17 194 189 50.7
A 3 78 368168 7260.86 194 189 50.7
A 3 14 64317 1265.36 194 189 50.7
B 8 3 2390606 66492.74 161 155 36.0
B 0 213 699165 19443.64 161 155 36.0
B 5 185 43274 1199.38 161 155 36.0
C 15 224 855326 16127.5 188 186 53.0
C 7 80 82859 1559.17 188 186 53.0
C 4 5 49734 934.45 188 186 53.0
D 15 125 3014004 89926.91 109 104 33.5
D 8 176 130965 3904.55 109 104 33.5
D 3 12 44084 1312.25 109 104 33.5

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