ASTROSAT CZTI

Data Quality Report

Orbit 38803

Creation date: 2024-06-27T21:56:37.917606
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_025T11_9000005398_38803cztM0_level2.fits modeM0/AS1A12_025T11_9000005398_38803cztM0_level2_quad_clean.evt
Size (bytes)756,794,880174,657,600
Size721.7 MB 166.6 MB
Events in quadrant A6,495,0441,178,700
Events in quadrant B5,833,4131,195,822
Events in quadrant C5,347,9391,155,778
Events in quadrant D9,506,6131,014,578

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259554
B0243703
C0222863
D0357883

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10735690.642757%
B107352322.161155%
C10735270.251514%
D107356966.483465%

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 13572 10737 38 38 0.28% 0.35%
B 13572 10737 126 126 0.93% 1.17%
C 13572 10737 17 17 0.13% 0.16%
D 13572 10737 543 543 4.00% 5.06%

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 762790 3081.58 1216 1189 247.1
A 12 16 453304 1829.34 1216 1189 247.1
A 13 248 408664 1648.72 1216 1189 247.1
B 5 184 575977 2474.09 1203 1171 232.3
B 5 200 308684 1323.6 1203 1171 232.3
B 0 230 90825 385.89 1203 1171 232.3
C 15 214 466933 1675.92 1187 1197 277.9
C 1 23 88806 315.26 1187 1197 277.9
C 0 10 51901 182.45 1187 1197 277.9
D 12 235 1696268 5975.59 1163 1130 283.7
D 2 16 909338 3201.55 1163 1130 283.7
D 2 153 757128 2664.99 1163 1130 283.7

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