ASTROSAT CZTI

Data Quality Report

Orbit 20170610_C02_042T02_9000001284_level2

Creation date: 2025-11-14T10:27:03.064016
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/AS1C02_042T02_9000001284cztM0_level2.fits modeM0/AS1C02_042T02_9000001284cztM0_level2_quad_clean.evt
Size (bytes)27,512,64039,862,080
Size26.2 MB 38.0 MB
Events in quadrant A161,440257,534
Events in quadrant B156,150258,943
Events in quadrant C159,104245,263
Events in quadrant D139,314227,423

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01290
B01290
C01290
D01290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0620
C0620
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065820
B062210
C063920
D064080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A304650.164150%
B305400.000000%
C305630.098168%
D305660.196335%

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 3096 3070 0 0 0.00% 0.00%
B 3095 3085 0 0 0.00% 0.00%
C 3096 3086 0 0 0.00% 0.00%
D 3096 3086 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 14 188 178 11.34 41 39 12.3
A 0 29 138 8.08 41 39 12.3
A 7 110 136 7.91 41 39 12.3
B 2 9 152 10.77 41 39 10.5
B 3 17 123 8.0 41 39 10.5
B 5 128 117 7.43 41 39 10.5
C 3 202 133 7.32 41 39 12.8
C 12 250 131 7.16 41 39 12.8
C 1 80 122 6.46 41 39 12.8
D 1 19 119 6.74 39 36 12.3
D 3 31 116 6.49 39 36 12.3
D 4 246 115 6.41 39 36 12.3

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