ASTROSAT CZTI

Data Quality Report

Orbit 37963

Creation date: 2024-06-27T21:46:43.558484
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/AS1A11_082T01_9000005356_37963cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37963cztM0_level2_quad_clean.evt
Size (bytes)869,840,640133,727,040
Size829.5 MB 127.5 MB
Events in quadrant A8,124,544839,887
Events in quadrant B5,819,719854,654
Events in quadrant C5,517,075841,533
Events in quadrant D6,150,987763,635

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0317834
B0244213
C0230753
D0259403

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108111401.294977%
B108111911.766719%
C10811860.795486%
D108112352.173712%

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 13587 10813 90 90 0.66% 0.83%
B 13587 10813 128 128 0.94% 1.18%
C 13587 10813 60 60 0.44% 0.55%
D 13587 10813 202 202 1.49% 1.87%

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 15 222 2449627 10031.92 1207 1183 244.1
A 10 83 669399 2737.86 1207 1183 244.1
A 15 254 100296 406.09 1207 1183 244.1
B 5 172 447536 1952.99 1209 1179 228.6
B 5 184 300297 1308.76 1209 1179 228.6
B 4 81 156131 677.98 1209 1179 228.6
C 15 214 452661 1645.0 1186 1194 274.4
C 0 10 366460 1330.91 1186 1194 274.4
C 14 254 39484 139.52 1186 1194 274.4
D 2 249 517922 1812.39 1174 1140 285.1
D 13 249 475276 1662.83 1174 1140 285.1
D 1 52 243458 849.82 1174 1140 285.1

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