ASTROSAT CZTI

Data Quality Report

Orbit 58357

Creation date: 2026-07-11T18:11:28.118447
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/AS1A14_044T03_9000006588_58357cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58357cztM0_level2_quad_clean.evt
Size (bytes)843,258,24077,921,280
Size804.2 MB 74.3 MB
Events in quadrant A3,629,247655,866
Events in quadrant B7,951,652580,452
Events in quadrant C15,164,83536,656
Events in quadrant D3,921,131595,562

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157860
B0284830
C0497940
D0164230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70441261.788756%
B7044156222.174901%
C7044673195.556502%
D7044801.135718%

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 7044 7044 105 105 1.49% 1.49%
B 7044 7044 1138 1138 16.16% 16.16%
C 7043 7043 4783 4783 67.91% 67.91%
D 7044 7044 84 84 1.19% 1.19%

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 12 80 342414 1823.74 759 737 187.3
A 13 248 60095 316.83 759 737 187.3
A 3 245 40300 211.17 759 737 187.3
B 6 255 2990939 20376.69 687 664 146.7
B 10 128 1172346 7984.22 687 664 146.7
B 3 238 307226 2089.01 687 664 146.7
C 15 148 14118712 218760.43 229 228 64.5
C 12 252 79975 1235.65 229 228 64.5
C 4 5 16089 245.76 229 228 64.5
D 2 249 255117 1226.95 739 707 207.4
D 3 12 239618 1152.21 739 707 207.4
D 2 31 148990 715.13 739 707 207.4

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