ASTROSAT CZTI

Data Quality Report

Orbit 24593

Creation date: 2024-06-27T19:07:40.415864
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_189T01_9000003614_24593cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24593cztM0_level2_quad_clean.evt
Size (bytes)175,403,52025,223,040
Size167.3 MB 24.1 MB
Events in quadrant A771,841184,994
Events in quadrant B803,927188,083
Events in quadrant C2,159,469149,091
Events in quadrant D1,487,238144,364

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031611
B033291
C072991
D053971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128490.700935%
B1284110.856698%
C128468953.660436%
D128427721.573209%

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 1284 1284 0 0 0.00% 0.00%
B 1284 1284 0 0 0.00% 0.00%
C 1284 1284 322 322 25.08% 25.08%
D 1284 1284 243 243 18.93% 18.93%

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 2191 49.04 200 196 40.7
A 0 226 1712 37.26 200 196 40.7
A 3 137 1692 36.77 200 196 40.7
B 7 202 19625 506.52 197 193 38.4
B 0 190 12379 317.64 197 193 38.4
B 12 111 4114 102.21 197 193 38.4
C 7 247 1463753 35901.27 169 170 40.8
C 14 238 26990 657.89 169 170 40.8
C 0 239 4033 94.76 169 170 40.8
D 1 52 390212 9153.32 173 169 42.6
D 7 238 270945 6354.42 173 169 42.6
D 8 195 156926 3678.69 173 169 42.6

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