ASTROSAT CZTI

Data Quality Report

Orbit 52012

Creation date: 2025-05-12T11:43:06.049627
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_011T06_9000006468_52012cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52012cztM0_level2_quad_clean.evt
Size (bytes)2,125,180,800217,889,280
Size2.0 GB 207.8 MB
Events in quadrant A11,308,5781,602,910
Events in quadrant B16,756,5681,608,670
Events in quadrant C15,812,6961,398,584
Events in quadrant D33,404,143745,661

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0455052
B0623362
C0597272
D01117272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179855973.319433%
B17986194210.797287%
C17986210111.681308%
D17986924051.373290%

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 19015 17985 201 201 1.06% 1.12%
B 19016 17986 1174 1174 6.17% 6.53%
C 19016 17987 1902 1902 10.00% 10.57%
D 19016 17986 9110 9110 47.91% 50.65%

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 3 14 1129957 2418.52 1888 1842 466.4
A 4 3 754282 1613.13 1888 1842 466.4
A 4 95 520778 1112.53 1888 1842 466.4
B 7 0 4182222 10817.52 1829 1764 386.5
B 4 206 2361890 6107.16 1829 1764 386.5
B 5 185 520466 1342.21 1829 1764 386.5
C 15 224 4205376 8641.71 1765 1750 486.4
C 13 3 994829 2041.55 1765 1750 486.4
C 15 147 904180 1855.19 1765 1750 486.4
D 12 17 13050890 32810.92 1367 1306 397.7
D 6 42 4724248 11875.02 1367 1306 397.7
D 13 187 3133685 7875.82 1367 1306 397.7

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