ASTROSAT CZTI

Data Quality Report

Orbit 20190208_T03_003T01_9000002712_level2

Creation date: 2025-11-27T14:56:56.751315
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/AS1T03_003T01_9000002712cztM0_level2.fits modeM0/AS1T03_003T01_9000002712cztM0_level2_quad_clean.evt
Size (bytes)797,880,960675,852,480
Size760.9 MB 644.5 MB
Events in quadrant A4,937,4923,881,279
Events in quadrant B4,728,8643,923,204
Events in quadrant C4,780,6763,713,163
Events in quadrant D4,099,5303,334,904

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01250
B01250
C01250
D01250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01814970
B01733210
C01798160
D02436860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016700
B016700
C016700
D016700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8191519332.359763%
B8191511471.400232%
C8185322242.717066%
D8184856816.940915%

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 94528 81955 0 0 0.00% 0.00%
B 94528 81969 0 0 0.00% 0.00%
C 94528 81938 0 0 0.00% 0.00%
D 94528 81772 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 0 29 4710 11.06 1285 1206 316.8
A 7 110 3939 8.63 1285 1206 316.8
A 0 30 3777 8.12 1285 1206 316.8
B 2 9 3908 11.02 1250 1191 246.5
B 2 8 3333 8.69 1250 1191 246.5
B 3 17 3186 8.09 1250 1191 246.5
C 12 241 3328 6.68 1263 1181 321.3
C 3 126 3279 6.53 1263 1181 321.3
C 2 191 3159 6.16 1263 1181 321.3
D 10 190 3075 6.43 1171 1067 312.4
D 3 14 3053 6.36 1171 1067 312.4
D 6 231 3044 6.33 1171 1067 312.4

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