ASTROSAT CZTI

Data Quality Report

Orbit 20211201_C07_001T03_9000004790_level2

Creation date: 2025-12-30T15:41:53.946186
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/AS1C07_001T03_9000004790cztM0_level2.fits modeM0/AS1C07_001T03_9000004790cztM0_level2_quad_clean.evt
Size (bytes)796,357,440972,213,120
Size759.5 MB 927.2 MB
Events in quadrant A4,996,2006,501,029
Events in quadrant B4,532,3365,935,066
Events in quadrant C4,746,7606,002,750
Events in quadrant D3,924,0885,093,888

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017580
B017580
C017580
D017580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01737460
B02405490
C01859700
D03034770

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03130
B03130
C03130
D03130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86270720.083459%
B8627068727.965689%
C862708600.996870%
D8627072068.352846%

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 117339 86270 0 0 0.00% 0.00%
B 117339 86188 0 0 0.00% 0.00%
C 117339 86262 0 0 0.00% 0.00%
D 117338 86038 0 0 0.00% 0.00%

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 19 4097 8.86 1302 1225 324.1
A 7 110 4055 8.73 1302 1225 324.1
A 0 29 3937 8.37 1302 1225 324.1
B 2 9 3878 11.42 1203 1150 238.8
B 3 80 3518 9.91 1203 1150 238.8
B 2 8 3167 8.44 1203 1150 238.8
C 3 203 3701 7.94 1257 1181 317.5
C 3 202 3690 7.9 1257 1181 317.5
C 3 187 3242 6.49 1257 1181 317.5
D 7 3 2901 6.24 1123 1022 301.1
D 6 62 2879 6.17 1123 1022 301.1
D 4 160 2854 6.08 1123 1022 301.1

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