ASTROSAT CZTI

Data Quality Report

Orbit 22835

Creation date: 2024-06-27T18:46:24.057890
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/AS1C05_012T02_9000003372_22835cztM0_level2.evt modeM0/AS1C05_012T02_9000003372_22835cztM0_level2_quad_clean.evt
Size (bytes)706,579,200160,715,520
Size673.8 MB 153.3 MB
Events in quadrant A4,803,3881,048,318
Events in quadrant B4,886,0261,061,242
Events in quadrant C4,840,0361,017,393
Events in quadrant D6,144,4791,000,362

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216221
B0217581
C0216251
D0256681

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10700230.214953%
B10701360.336417%
C10701860.803663%
D107011571.467153%

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 11210 10701 0 0 0.00% 0.00%
B 11211 10702 6 6 0.05% 0.06%
C 11211 10702 0 0 0.00% 0.00%
D 11211 10702 111 111 0.99% 1.04%

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 13 254 19135 72.16 1241 1214 248.3
A 11 47 11360 40.85 1241 1214 248.3
A 3 137 11112 39.86 1241 1214 248.3
B 15 33 36062 148.86 1231 1198 234.2
B 12 111 28990 118.67 1231 1198 234.2
B 11 111 25845 105.24 1231 1198 234.2
C 14 238 190005 679.8 1188 1193 277.7
C 10 22 11938 38.69 1188 1193 277.7
C 0 239 9907 31.37 1188 1193 277.7
D 1 52 1101705 3773.83 1203 1168 291.6
D 10 230 130453 443.33 1203 1168 291.6
D 7 238 108555 368.24 1203 1168 291.6

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