ASTROSAT CZTI

Data Quality Report

Orbit 34267

Creation date: 2022-01-29T11:26:03.000476
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_059T09_9000004888_34267cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34267cztM0_level2_quad_clean.evt
Size (bytes)242,976,96031,135,680
Size231.7 MB 29.7 MB
Events in quadrant A1,463,829190,647
Events in quadrant B1,834,492179,294
Events in quadrant C1,605,684187,212
Events in quadrant D2,249,158172,077

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110804751
B0142266913
C0119815396
D0159717323

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010943
B011244
C011650
D011448

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163
B0163
C0164
D0151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3065210.685155%
B2924933.180575%
C3009100.332336%
D2867712.476456%

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 6910 3562 17 17 0.25% 0.48%
B 6710 3417 57 57 0.85% 1.67%
C 6716 3499 8 8 0.12% 0.23%
D 6748 3368 51 51 0.76% 1.51%

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 9 143 61175 835.86 358 351 72.8
A 10 83 11852 158.05 358 351 72.8
A 13 6 5300 68.01 358 351 72.8
B 5 172 312495 4746.1 337 328 65.8
B 0 189 120145 1821.67 337 328 65.8
B 0 229 41550 626.73 337 328 65.8
C 15 214 130940 1634.06 341 343 79.9
C 14 67 66077 822.48 341 343 79.9
C 0 10 49260 612.06 341 343 79.9
D 8 195 753800 9149.78 323 313 82.4
D 13 249 81286 983.28 323 313 82.4
D 10 199 40400 486.79 323 313 82.4

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