ASTROSAT CZTI

Data Quality Report

Orbit 42598

Creation date: 2024-06-27T22:42:01.393736
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/AS1A12_061T07_9000005818_42598cztM0_level2.fits modeM0/AS1A12_061T07_9000005818_42598cztM0_level2_quad_clean.evt
Size (bytes)648,852,480171,092,160
Size618.8 MB 163.2 MB
Events in quadrant A5,607,5491,149,394
Events in quadrant B4,806,4261,173,570
Events in quadrant C5,492,6201,120,187
Events in quadrant D7,281,729996,395

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229824
B0218573
C0230023
D0292043

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10700220.205607%
B10700150.140187%
C10700480.448598%
D107005304.953271%

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 13475 10702 6 6 0.04% 0.06%
B 13475 10702 8 8 0.06% 0.07%
C 13475 10702 34 34 0.25% 0.32%
D 13475 10702 503 503 3.73% 4.70%

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 10 83 1062629 4485.48 1161 1134 236.7
A 2 79 20072 80.02 1161 1134 236.7
A 13 248 18122 71.78 1161 1134 236.7
B 0 245 132856 596.27 1155 1124 220.9
B 0 229 32257 140.92 1155 1124 220.9
B 0 156 32037 139.93 1155 1124 220.9
C 15 214 472173 1788.38 1132 1137 263.4
C 4 254 283453 1071.87 1132 1137 263.4
C 5 250 135450 509.95 1132 1137 263.4
D 1 52 1098975 4027.38 1110 1079 272.6
D 2 249 506499 1854.02 1110 1079 272.6
D 2 16 366779 1341.49 1110 1079 272.6

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